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2138831591253 = 37101849123393
BaseRepresentation
bin11111000111111100010…
…011000001011101010101
321120110200211222102020020
4133013330103001131111
5240020311341410003
64314322103455353
7310345145362620
oct37077423013525
97513624872206
102138831591253
11755089746165
122a662a457559
131268ca043236
147573cc52db7
153a981353d53
hex1f1fc4c1755

2138831591253 has 8 divisors (see below), whose sum is σ = 3259171948608. Its totient is φ = 1222189480704.

The previous prime is 2138831591233. The next prime is 2138831591329. The reversal of 2138831591253 is 3521951388312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2138831591253 - 28 = 2138831590997 is a prime.

It is a super-2 number, since 2×21388315912532 (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2138831591196 and 2138831591205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138831591233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50924561676 + ... + 50924561717.

It is an arithmetic number, because the mean of its divisors is an integer number (407396493576).

Almost surely, 22138831591253 is an apocalyptic number.

It is an amenable number.

2138831591253 is a deficient number, since it is larger than the sum of its proper divisors (1120340357355).

2138831591253 is a wasteful number, since it uses less digits than its factorization.

2138831591253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101849123403.

The product of its digits is 1555200, while the sum is 51.

The spelling of 2138831591253 in words is "two trillion, one hundred thirty-eight billion, eight hundred thirty-one million, five hundred ninety-one thousand, two hundred fifty-three".

Divisors: 1 3 7 21 101849123393 305547370179 712943863751 2138831591253