616655051616 has 24 divisors (see below), whose sum is σ = 1618719510744. Its totient is φ = 205551683840.

The previous prime is 616655051611. The next prime is 616655051641. The reversal of 616655051616 is 616150556616.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×616655051616² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616655051611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3211744965 + ... + 3211745156.

It is an arithmetic number, because the mean of its divisors is an integer number (67446646281).

Almost surely, 2^616655051616 is an apocalyptic number.

It is an amenable number.

616655051616 is an abundant number, since it is smaller than the sum of its proper divisors (1002064459128).

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

616655051616 is a wasteful number, since it uses less digits than its factorization.

616655051616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6423490134 (or 6423490126 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 48.

The spelling of 616655051616 in words is "six hundred sixteen billion, six hundred fifty-five million, fifty-one thousand, six hundred sixteen".