616661049164 has 12 divisors (see below), whose sum is σ = 1082970113064. Its totient is φ = 307241016864.

The previous prime is 616661049163. The next prime is 616661049187. The reversal of 616661049164 is 461940166616.

It is not an unprimeable number, because it can be changed into a prime (616661049163) 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, 272375657 + ... + 272377920.

It is an arithmetic number, because the mean of its divisors is an integer number (90247509422).

Almost surely, 2^616661049164 is an apocalyptic number.

It is an amenable number.

616661049164 is a deficient number, since it is larger than the sum of its proper divisors (466309063900).

616661049164 is a wasteful number, since it uses less digits than its factorization.

616661049164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544753864 (or 544753862 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 50.

The spelling of 616661049164 in words is "six hundred sixteen billion, six hundred sixty-one million, forty-nine thousand, one hundred sixty-four".