12155260156 has 48 divisors (see below), whose sum is σ = 23920545600. Its totient is φ = 5362486272.

The previous prime is 12155260153. The next prime is 12155260171. The reversal of 12155260156 is 65106255121.

It is a super-2 number, since 2×12155260156² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12155260153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2424180 + ... + 2429188.

It is an arithmetic number, because the mean of its divisors is an integer number (498344700).

Almost surely, 2^12155260156 is an apocalyptic number.

It is an amenable number.

12155260156 is a deficient number, since it is larger than the sum of its proper divisors (11765285444).

12155260156 is a wasteful number, since it uses less digits than its factorization.

12155260156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7078 (or 7076 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 34.

The spelling of 12155260156 in words is "twelve billion, one hundred fifty-five million, two hundred sixty thousand, one hundred fifty-six".