636980268027936 has 96 divisors (see below), whose sum is σ = 1937855463441408. Its totient is φ = 179431061402880.

The previous prime is 636980268027853. The next prime is 636980268027941. The reversal of 636980268027936 is 639720862089636.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6675214990 + ... + 6675310413.

It is an arithmetic number, because the mean of its divisors is an integer number (20185994410848).

Almost surely, 2^{636980268027936} is an apocalyptic number.

It is an amenable number.

636980268027936 is an abundant number, since it is smaller than the sum of its proper divisors (1300875195413472).

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

636980268027936 is a wasteful number, since it uses less digits than its factorization.

636980268027936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13350525494 (or 13350525486 counting only the distinct ones).

The product of its (nonzero) digits is 1693052928, while the sum is 75.

The spelling of 636980268027936 in words is "six hundred thirty-six trillion, nine hundred eighty billion, two hundred sixty-eight million, twenty-seven thousand, nine hundred thirty-six".