407956161618 has 24 divisors (see below), whose sum is σ = 883923296256. Its totient is φ = 135982575000.

The previous prime is 407956161577. The next prime is 407956161629. The reversal of 407956161618 is 816161659704.

407956161618 is a `hidden beast` number, since 4 + 0 + 7 + 9 + 5 + 6 + 1 + 616 + 18 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 778543 + ... + 1192493.

It is an arithmetic number, because the mean of its divisors is an integer number (36830137344).

Almost surely, 2^407956161618 is an apocalyptic number.

407956161618 is an abundant number, since it is smaller than the sum of its proper divisors (475967134638).

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

407956161618 is a wasteful number, since it uses less digits than its factorization.

407956161618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468710 (or 468707 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 407956161618 in words is "four hundred seven billion, nine hundred fifty-six million, one hundred sixty-one thousand, six hundred eighteen".