12155653488 has 320 divisors, whose sum is σ = 36435953664. Its totient is φ = 3459456000.

The previous prime is 12155653453. The next prime is 12155653493. The reversal of 12155653488 is 88435655121.

It is a super-2 number, since 2×12155653488² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 92791183 + ... + 92791313.

Almost surely, 2^12155653488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12155653488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18217976832).

12155653488 is an abundant number, since it is smaller than the sum of its proper divisors (24280300176).

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

12155653488 is a wasteful number, since it uses less digits than its factorization.

12155653488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324 (or 318 counting only the distinct ones).

The product of its digits is 1152000, while the sum is 48.

The spelling of 12155653488 in words is "twelve billion, one hundred fifty-five million, six hundred fifty-three thousand, four hundred eighty-eight".