2150505656 has 16 divisors (see below), whose sum is σ = 4342367400. Its totient is φ = 992541024.

The previous prime is 2150505653. The next prime is 2150505667. The reversal of 2150505656 is 6565050512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2150505653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10338866 + ... + 10339073.

Almost surely, 2^2150505656 is an apocalyptic number.

2150505656 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2150505656 is an abundant number, since it is smaller than the sum of its proper divisors (2191861744).

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

2150505656 is a wasteful number, since it uses less digits than its factorization.

2150505656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20677958 (or 20677954 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 35.

The square root of 2150505656 is about 46373.5447857935. The cubic root of 2150505656 is about 1290.7640559101.

The spelling of 2150505656 in words is "two billion, one hundred fifty million, five hundred five thousand, six hundred fifty-six".