2153436656 has 40 divisors (see below), whose sum is σ = 4814644224. Its totient is φ = 913936320.

The previous prime is 2153436643. The next prime is 2153436661. The reversal of 2153436656 is 6566343512.

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, 81800 + ... + 104871.

Almost surely, 2^2153436656 is an apocalyptic number.

It is an amenable number.

2153436656 is an abundant number, since it is smaller than the sum of its proper divisors (2661207568).

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

2153436656 is a wasteful number, since it uses less digits than its factorization.

2153436656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186789 (or 186783 counting only the distinct ones).

The product of its digits is 388800, while the sum is 41.

The square root of 2153436656 is about 46405.1360950488. The cubic root of 2153436656 is about 1291.3501989833.

The spelling of 2153436656 in words is "two billion, one hundred fifty-three million, four hundred thirty-six thousand, six hundred fifty-six".