Search a number
-
+
102157751591280 = 243257118920704183
BaseRepresentation
bin10111001110100101110100…
…011111101010000101110000
3111101201012000100121112022200
4113032211310133222011300
5101342223033401410110
61001134342335503200
730342440214065130
oct2716456437520560
9441635010545280
10102157751591280
112a60694a5873a0
12b55aa34387b00
134500585b96568
141b32666736ac0
15bc2556b596c0
hex5ce9747ea170

102157751591280 has 480 divisors, whose sum is σ = 432541874119680. Its totient is φ = 20989071544320.

The previous prime is 102157751591267. The next prime is 102157751591309. The reversal of 102157751591280 is 82195157751201.

102157751591280 is a `hidden beast` number, since 1 + 0 + 2 + 1 + 577 + 5 + 1 + 59 + 12 + 8 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5417932 + ... + 15286251.

It is an arithmetic number, because the mean of its divisors is an integer number (901128904416).

Almost surely, 2102157751591280 is an apocalyptic number.

102157751591280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102157751591280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216270937059840).

102157751591280 is an abundant number, since it is smaller than the sum of its proper divisors (330384122528400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102157751591280 is a wasteful number, since it uses less digits than its factorization.

102157751591280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20704309 (or 20704300 counting only the distinct ones).

The product of its (nonzero) digits is 1764000, while the sum is 54.

The spelling of 102157751591280 in words is "one hundred two trillion, one hundred fifty-seven billion, seven hundred fifty-one million, five hundred ninety-one thousand, two hundred eighty".