312444642636 has 72 divisors (see below), whose sum is σ = 904199039744. Its totient is φ = 89113517280.

The previous prime is 312444642611. The next prime is 312444642673. The reversal of 312444642636 is 636246444213.

312444642636 is a `hidden beast` number, since 3 + 1 + 2 + 4 + 4 + 4 + 6 + 4 + 2 + 636 = 666.

312444642636 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 312444642591 and 312444642600.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 941800 + ... + 1229583.

Almost surely, 2^312444642636 is an apocalyptic number.

312444642636 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

312444642636 is an abundant number, since it is smaller than the sum of its proper divisors (591754397108).

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

312444642636 is a wasteful number, since it uses less digits than its factorization.

312444642636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2171971 (or 2171966 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 45.

The spelling of 312444642636 in words is "three hundred twelve billion, four hundred forty-four million, six hundred forty-two thousand, six hundred thirty-six".