856451720132 has 24 divisors (see below), whose sum is σ = 1514572131072. Its totient is φ = 423723585600.

The previous prime is 856451720123. The next prime is 856451720147. The reversal of 856451720132 is 231027154658.

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, 337169 + ... + 1351512.

It is an arithmetic number, because the mean of its divisors is an integer number (63107172128).

Almost surely, 2^856451720132 is an apocalyptic number.

It is an amenable number.

856451720132 is a deficient number, since it is larger than the sum of its proper divisors (658120410940).

856451720132 is a wasteful number, since it uses less digits than its factorization.

856451720132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1690019 (or 1690017 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 44.

The spelling of 856451720132 in words is "eight hundred fifty-six billion, four hundred fifty-one million, seven hundred twenty thousand, one hundred thirty-two".