12157100500655 has 32 divisors (see below), whose sum is σ = 16627224222720. Its totient is φ = 8446658894080.

The previous prime is 12157100500621. The next prime is 12157100500663. The reversal of 12157100500655 is 55600500175121.

It is a happy number.

12157100500655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12157100500655 - 2²² = 12157096306351 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4916267 + ... + 6963036.

It is an arithmetic number, because the mean of its divisors is an integer number (519600756960).

Almost surely, 2^{12157100500655} is an apocalyptic number.

12157100500655 is a deficient number, since it is larger than the sum of its proper divisors (4470123722065).

12157100500655 is a wasteful number, since it uses less digits than its factorization.

12157100500655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11880151.

The product of its (nonzero) digits is 52500, while the sum is 38.

Adding to 12157100500655 its reverse (55600500175121), we get a palindrome (67757600675776).

The spelling of 12157100500655 in words is "twelve trillion, one hundred fifty-seven billion, one hundred million, five hundred thousand, six hundred fifty-five".