12157505262 has 96 divisors (see below), whose sum is σ = 31755360000. Its totient is φ = 3283835904.

The previous prime is 12157505257. The next prime is 12157505263. The reversal of 12157505262 is 26250575121.

12157505262 is a `hidden beast` number, since 1 + 21 + 575 + 0 + 5 + 2 + 62 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12157505263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1189518 + ... + 1199694.

It is an arithmetic number, because the mean of its divisors is an integer number (330785000).

Almost surely, 2^12157505262 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12157505262, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15877680000).

12157505262 is an abundant number, since it is smaller than the sum of its proper divisors (19597854738).

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

12157505262 is a wasteful number, since it uses less digits than its factorization.

12157505262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10710 (or 10707 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 36.

The spelling of 12157505262 in words is "twelve billion, one hundred fifty-seven million, five hundred five thousand, two hundred sixty-two".