993283903546864 has 80 divisors (see below), whose sum is σ = 1996973812647648. Its totient is φ = 478222955099136.

The previous prime is 993283903546859. The next prime is 993283903546871. The reversal of 993283903546864 is 468645309382399.

It is a super-2 number, since 2×993283903546864² (a number of 31 digits) contains 22 as substring.

It is a congruent number.

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, 55289982 + ... + 71017954.

Almost surely, 2^{993283903546864} is an apocalyptic number.

It is an amenable number.

993283903546864 is an abundant number, since it is smaller than the sum of its proper divisors (1003689909100784).

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

993283903546864 is a wasteful number, since it uses less digits than its factorization.

993283903546864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15729122 (or 15729116 counting only the distinct ones).

The product of its (nonzero) digits is 7255941120, while the sum is 79.

The spelling of 993283903546864 in words is "nine hundred ninety-three trillion, two hundred eighty-three billion, nine hundred three million, five hundred forty-six thousand, eight hundred sixty-four".