12601155555 has 32 divisors (see below), whose sum is σ = 22409203200. Its totient is φ = 6718471776.

The previous prime is 12601155499. The next prime is 12601155643. The reversal of 12601155555 is 55555110621.

It is not a de Polignac number, because 12601155555 - 2³⁰ = 11527413731 is a prime.

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, 467352 + ... + 493578.

It is an arithmetic number, because the mean of its divisors is an integer number (700287600).

Almost surely, 2^12601155555 is an apocalyptic number.

12601155555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12601155555 is a deficient number, since it is larger than the sum of its proper divisors (9808047645).

12601155555 is a wasteful number, since it uses less digits than its factorization.

12601155555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29800 (or 29794 counting only the distinct ones).

The product of its (nonzero) digits is 37500, while the sum is 36.

The spelling of 12601155555 in words is "twelve billion, six hundred one million, one hundred fifty-five thousand, five hundred fifty-five".