74991069968 has 10 divisors (see below), whose sum is σ = 145295198094. Its totient is φ = 37495534976.

The previous prime is 74991069949. The next prime is 74991069991. The reversal of 74991069968 is 86996019947.

It can be written as a sum of positive squares in only one way, i.e., 74907310864 + 83759104 = 273692^2 + 9152^2 .

It is a junction number, because it is equal to n+sod(n) for n = 74991069898 and 74991069907.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2343470921 + ... + 2343470952.

Almost surely, 2^74991069968 is an apocalyptic number.

It is an amenable number.

74991069968 is a deficient number, since it is larger than the sum of its proper divisors (70304128126).

74991069968 is a wasteful number, since it uses less digits than its factorization.

74991069968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4686941881 (or 4686941875 counting only the distinct ones).

The product of its (nonzero) digits is 52907904, while the sum is 68.

The spelling of 74991069968 in words is "seventy-four billion, nine hundred ninety-one million, sixty-nine thousand, nine hundred sixty-eight".