74991069967 has 32 divisors (see below), whose sum is σ = 85162629888. Its totient is φ = 65435040000.

The previous prime is 74991069949. The next prime is 74991069991. The reversal of 74991069967 is 76996019947.

It is a de Polignac number, because none of the positive numbers 2^k-74991069967 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (67).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74991069767) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46261417 + ... + 46263037.

It is an arithmetic number, because the mean of its divisors is an integer number (2661332184).

Almost surely, 2^74991069967 is an apocalyptic number.

74991069967 is a deficient number, since it is larger than the sum of its proper divisors (10171559921).

74991069967 is a wasteful number, since it uses less digits than its factorization.

74991069967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3271.

The product of its (nonzero) digits is 46294416, while the sum is 67.

The spelling of 74991069967 in words is "seventy-four billion, nine hundred ninety-one million, sixty-nine thousand, nine hundred sixty-seven".