2156432325420 has 48 divisors (see below), whose sum is σ = 6355800541440. Its totient is φ = 544782902976.

The previous prime is 2156432325367. The next prime is 2156432325461. The reversal of 2156432325420 is 245232346512.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 945802512 + ... + 945804791.

It is an arithmetic number, because the mean of its divisors is an integer number (132412511280).

Almost surely, 2^{2156432325420} is an apocalyptic number.

2156432325420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2156432325420 is an abundant number, since it is smaller than the sum of its proper divisors (4199368216020).

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

2156432325420 is a wasteful number, since it uses less digits than its factorization.

2156432325420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1891607334 (or 1891607332 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 39.

The spelling of 2156432325420 in words is "two trillion, one hundred fifty-six billion, four hundred thirty-two million, three hundred twenty-five thousand, four hundred twenty".