477636991828 has 12 divisors (see below), whose sum is σ = 835880290560. Its totient is φ = 238814051672.

The previous prime is 477636991801. The next prime is 477636991847. The reversal of 477636991828 is 828199636774.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 863098 + ... + 1303921.

It is an arithmetic number, because the mean of its divisors is an integer number (69656690880).

Almost surely, 2^477636991828 is an apocalyptic number.

It is an amenable number.

477636991828 is a deficient number, since it is larger than the sum of its proper divisors (358243298732).

477636991828 is a wasteful number, since it uses less digits than its factorization.

477636991828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2222126 (or 2222124 counting only the distinct ones).

The product of its digits is 219469824, while the sum is 70.

The spelling of 477636991828 in words is "four hundred seventy-seven billion, six hundred thirty-six million, nine hundred ninety-one thousand, eight hundred twenty-eight".