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20512193093 = 713612153059
BaseRepresentation
bin10011000110100111…
…110011101001000101
31221221112022101002022
4103012213303221011
5314002110134333
613231223252525
71324211523140
oct230647635105
957845271068
1020512193093
1187766642a7
123b855aa145
131c1b83b882
14dc8333057
15800be1c98
hex4c69f3a45

20512193093 has 8 divisors (see below), whose sum is σ = 23459741760. Its totient is φ = 17568953280.

The previous prime is 20512193077. The next prime is 20512193111. The reversal of 20512193093 is 39039121502.

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

It is a cyclic number.

It is not a de Polignac number, because 20512193093 - 24 = 20512193077 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20512193393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1067003 + ... + 1086056.

It is an arithmetic number, because the mean of its divisors is an integer number (2932467720).

Almost surely, 220512193093 is an apocalyptic number.

It is an amenable number.

20512193093 is a deficient number, since it is larger than the sum of its proper divisors (2947548667).

20512193093 is a wasteful number, since it uses less digits than its factorization.

20512193093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2154427.

The product of its (nonzero) digits is 14580, while the sum is 35.

The spelling of 20512193093 in words is "twenty billion, five hundred twelve million, one hundred ninety-three thousand, ninety-three".

Divisors: 1 7 1361 9527 2153059 15071413 2930313299 20512193093