993749021872 has 40 divisors (see below), whose sum is σ = 2039489616096. Its totient is φ = 467453285376.

The previous prime is 993749021857. The next prime is 993749021929. The reversal of 993749021872 is 278120947399.

It is a self number, because there is not a number n which added to its sum of digits gives 993749021872.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94863 + ... + 1412974.

Almost surely, 2^993749021872 is an apocalyptic number.

It is an amenable number.

993749021872 is an abundant number, since it is smaller than the sum of its proper divisors (1045740594224).

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

993749021872 is a wasteful number, since it uses less digits than its factorization.

993749021872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1510285 (or 1510279 counting only the distinct ones).

The product of its (nonzero) digits is 13716864, while the sum is 61.

The spelling of 993749021872 in words is "nine hundred ninety-three billion, seven hundred forty-nine million, twenty-one thousand, eight hundred seventy-two".