616645136632250 has 64 divisors (see below), whose sum is σ = 1259329034381184. Its totient is φ = 224229689856000.

The previous prime is 616645136632229. The next prime is 616645136632433. The reversal of 616645136632250 is 52236631546616.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 124474682 + ... + 129333818.

It is an arithmetic number, because the mean of its divisors is an integer number (19677016162206).

Almost surely, 2^{616645136632250} is an apocalyptic number.

616645136632250 is an abundant number, since it is smaller than the sum of its proper divisors (642683897748934).

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

616645136632250 is a wasteful number, since it uses less digits than its factorization.

616645136632250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4905312 (or 4905302 counting only the distinct ones).

The product of its (nonzero) digits is 27993600, while the sum is 56.

The spelling of 616645136632250 in words is "six hundred sixteen trillion, six hundred forty-five billion, one hundred thirty-six million, six hundred thirty-two thousand, two hundred fifty".