216436634612 has 48 divisors (see below), whose sum is σ = 427518604800. Its totient is φ = 94971596160.

The previous prime is 216436634593. The next prime is 216436634633.

216436634612 is nontrivially palindromic in base 10.

216436634612 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10316189 + ... + 10337147.

It is an arithmetic number, because the mean of its divisors is an integer number (8906637600).

Almost surely, 2^216436634612 is an apocalyptic number.

216436634612 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

216436634612 is a deficient number, since it is larger than the sum of its proper divisors (211081970188).

216436634612 is a wasteful number, since it uses less digits than its factorization.

216436634612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29096 (or 29094 counting only the distinct ones).

The product of its digits is 746496, while the sum is 44.

The spelling of 216436634612 in words is "two hundred sixteen billion, four hundred thirty-six million, six hundred thirty-four thousand, six hundred twelve".