651612216156 has 48 divisors (see below), whose sum is σ = 1715844090240. Its totient is φ = 190649341120.

The previous prime is 651612216133. The next prime is 651612216169.

651612216156 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85107486 + ... + 85115141.

It is an arithmetic number, because the mean of its divisors is an integer number (35746751880).

Almost surely, 2^651612216156 is an apocalyptic number.

651612216156 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

651612216156 is an abundant number, since it is smaller than the sum of its proper divisors (1064231874084).

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

651612216156 is a wasteful number, since it uses less digits than its factorization.

651612216156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170222674 (or 170222672 counting only the distinct ones).

The product of its digits is 129600, while the sum is 42.

It can be divided in two parts, 651612 and 216156, that added together give a palindrome (867768).

The spelling of 651612216156 in words is "six hundred fifty-one billion, six hundred twelve million, two hundred sixteen thousand, one hundred fifty-six".