616540720116 has 12 divisors (see below), whose sum is σ = 1438595013632. Its totient is φ = 205513573368.

The previous prime is 616540720073. The next prime is 616540720139. The reversal of 616540720116 is 611027045616.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×616540720116² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25689196660 + ... + 25689196683.

Almost surely, 2^616540720116 is an apocalyptic number.

It is an amenable number.

616540720116 is an abundant number, since it is smaller than the sum of its proper divisors (822054293516).

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

616540720116 is a wasteful number, since it uses less digits than its factorization.

616540720116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51378393350 (or 51378393348 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The spelling of 616540720116 in words is "six hundred sixteen billion, five hundred forty million, seven hundred twenty thousand, one hundred sixteen".