616636225033644 has 24 divisors (see below), whose sum is σ = 1438822262244528. Its totient is φ = 205544779225600.

The previous prime is 616636225033643. The next prime is 616636225033667. The reversal of 616636225033644 is 446330522636616.

It is not an unprimeable number, because it can be changed into a prime (616636225033643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74547357 + ... + 82404980.

It is an arithmetic number, because the mean of its divisors is an integer number (59950927593522).

Almost surely, 2^{616636225033644} is an apocalyptic number.

It is an amenable number.

616636225033644 is an abundant number, since it is smaller than the sum of its proper divisors (822186037210884).

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

616636225033644 is a wasteful number, since it uses less digits than its factorization.

616636225033644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157279745 (or 157279743 counting only the distinct ones).

The product of its (nonzero) digits is 67184640, while the sum is 57.

The spelling of 616636225033644 in words is "six hundred sixteen trillion, six hundred thirty-six billion, two hundred twenty-five million, thirty-three thousand, six hundred forty-four".