12156551036 has 24 divisors (see below), whose sum is σ = 24315838176. Its totient is φ = 5209364160.

The previous prime is 12156551009. The next prime is 12156551051. The reversal of 12156551036 is 63015565121.

It is a junction number, because it is equal to n+sod(n) for n = 12156550987 and 12156551005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308366 + ... + 345546.

It is an arithmetic number, because the mean of its divisors is an integer number (1013159924).

Almost surely, 2^12156551036 is an apocalyptic number.

It is an amenable number.

12156551036 is an abundant number, since it is smaller than the sum of its proper divisors (12159287140).

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

12156551036 is a wasteful number, since it uses less digits than its factorization.

12156551036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48869 (or 48867 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 35.

The spelling of 12156551036 in words is "twelve billion, one hundred fifty-six million, five hundred fifty-one thousand, thirty-six".