616432036520 has 64 divisors (see below), whose sum is σ = 1421013237840. Its totient is φ = 240522854400.

The previous prime is 616432036513. The next prime is 616432036531. The reversal of 616432036520 is 25630234616.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 510261634276 + 106170402244 = 714326^2 + 325838^2 .

It is a super-2 number, since 2×616432036520² (a number of 24 digits) contains 22 as substring.

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, 12690680 + ... + 12739160.

Almost surely, 2^616432036520 is an apocalyptic number.

It is an amenable number.

616432036520 is an abundant number, since it is smaller than the sum of its proper divisors (804581201320).

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

616432036520 is a wasteful number, since it uses less digits than its factorization.

616432036520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56286 (or 56282 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 38.

The spelling of 616432036520 in words is "six hundred sixteen billion, four hundred thirty-two million, thirty-six thousand, five hundred twenty".