616416563421513 has 6 divisors (see below), whose sum is σ = 890379480497754. Its totient is φ = 410944375614336.

The previous prime is 616416563421509. The next prime is 616416563421551. The reversal of 616416563421513 is 315124365614616.

616416563421513 is a `hidden beast` number, since 6 + 1 + 6 + 4 + 1 + 6 + 563 + 4 + 21 + 51 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 616405898315529 + 10665105984 = 24827523^2 + 103272^2 .

It is not a de Polignac number, because 616416563421513 - 2² = 616416563421509 is a prime.

It is a super-2 number, since 2×616416563421513² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 616416563421513.

It is not an unprimeable number, because it can be changed into a prime (616416563421563) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34245364634520 + ... + 34245364634537.

It is an arithmetic number, because the mean of its divisors is an integer number (148396580082959).

Almost surely, 2^{616416563421513} is an apocalyptic number.

It is an amenable number.

616416563421513 is a deficient number, since it is larger than the sum of its proper divisors (273962917076241).

616416563421513 is a wasteful number, since it uses less digits than its factorization.

616416563421513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68490729269063 (or 68490729269060 counting only the distinct ones).

The product of its digits is 9331200, while the sum is 54.

The spelling of 616416563421513 in words is "six hundred sixteen trillion, four hundred sixteen billion, five hundred sixty-three million, four hundred twenty-one thousand, five hundred thirteen".