616655515512 has 64 divisors (see below), whose sum is σ = 1622892240000. Its totient is φ = 194719572864.

The previous prime is 616655515481. The next prime is 616655515519. The reversal of 616655515512 is 215515556616.

It is a super-2 number, since 2×616655515512² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616655515519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7849258 + ... + 7927430.

It is an arithmetic number, because the mean of its divisors is an integer number (25357691250).

Almost surely, 2^616655515512 is an apocalyptic number.

It is an amenable number.

616655515512 is an abundant number, since it is smaller than the sum of its proper divisors (1006236724488).

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

616655515512 is a wasteful number, since it uses less digits than its factorization.

616655515512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95500 (or 95496 counting only the distinct ones).

The product of its digits is 1350000, while the sum is 48.

The spelling of 616655515512 in words is "six hundred sixteen billion, six hundred fifty-five million, five hundred fifteen thousand, five hundred twelve".