2152005656 has 32 divisors (see below), whose sum is σ = 4278212640. Its totient is φ = 1011322368.

The previous prime is 2152005637. The next prime is 2152005679. The reversal of 2152005656 is 6565002512.

It is a super-2 number, since 2×2152005656² = 9262256686911980672, which contains 22 as substring.

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, 92501 + ... + 113403.

It is an arithmetic number, because the mean of its divisors is an integer number (133694145).

Almost surely, 2^2152005656 is an apocalyptic number.

It is an amenable number.

2152005656 is a deficient number, since it is larger than the sum of its proper divisors (2126206984).

2152005656 is a wasteful number, since it uses less digits than its factorization.

2152005656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21683 (or 21679 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 2152005656 is about 46389.7149808015. The cubic root of 2152005656 is about 1291.0640932667.

The spelling of 2152005656 in words is "two billion, one hundred fifty-two million, five thousand, six hundred fifty-six".