78744690998 has 8 divisors (see below), whose sum is σ = 118118298360. Its totient is φ = 39371924880.

The previous prime is 78744690949. The next prime is 78744691009. The reversal of 78744690998 is 89909644787.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141218 + ... + 421226.

It is an arithmetic number, because the mean of its divisors is an integer number (14764787295).

Almost surely, 2^78744690998 is an apocalyptic number.

78744690998 is a deficient number, since it is larger than the sum of its proper divisors (39373607362).

78744690998 is a wasteful number, since it uses less digits than its factorization.

78744690998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420622.

The product of its (nonzero) digits is 219469824, while the sum is 71.

The spelling of 78744690998 in words is "seventy-eight billion, seven hundred forty-four million, six hundred ninety thousand, nine hundred ninety-eight".