11986655156 has 48 divisors (see below), whose sum is σ = 24290496384. Its totient is φ = 5069316096.

The previous prime is 11986655141. The next prime is 11986655201. The reversal of 11986655156 is 65155668911.

It is a happy number.

It is a super-2 number, since 2×11986655156² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11986655098 and 11986655107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2398196 + ... + 2403188.

It is an arithmetic number, because the mean of its divisors is an integer number (506052008).

Almost surely, 2^11986655156 is an apocalyptic number.

It is an amenable number.

11986655156 is an abundant number, since it is smaller than the sum of its proper divisors (12303841228).

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

11986655156 is a wasteful number, since it uses less digits than its factorization.

11986655156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6120 (or 6118 counting only the distinct ones).

The product of its digits is 1944000, while the sum is 53.

The spelling of 11986655156 in words is "eleven billion, nine hundred eighty-six million, six hundred fifty-five thousand, one hundred fifty-six".