216077936634 has 64 divisors (see below), whose sum is σ = 549156372480. Its totient is φ = 61693014960.

The previous prime is 216077936609. The next prime is 216077936647. The reversal of 216077936634 is 436639770612.

It is a happy number.

216077936634 is a `hidden beast` number, since 21 + 607 + 7 + 9 + 3 + 6 + 6 + 3 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 337039 + ... + 738749.

It is an arithmetic number, because the mean of its divisors is an integer number (8580568320).

Almost surely, 2^216077936634 is an apocalyptic number.

216077936634 is an abundant number, since it is smaller than the sum of its proper divisors (333078435846).

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

216077936634 is a wasteful number, since it uses less digits than its factorization.

216077936634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403152 (or 403146 counting only the distinct ones).

The product of its (nonzero) digits is 6858432, while the sum is 54.

The spelling of 216077936634 in words is "two hundred sixteen billion, seventy-seven million, nine hundred thirty-six thousand, six hundred thirty-four".