74780943975 has 36 divisors (see below), whose sum is σ = 133961030112. Its totient is φ = 39877200000.

The previous prime is 74780943961. The next prime is 74780944009. The reversal of 74780943975 is 57934908747.

74780943975 is a `hidden beast` number, since 7 + 478 + 0 + 94 + 3 + 9 + 75 = 666.

It is not a de Polignac number, because 74780943975 - 2⁵ = 74780943943 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1768075 + ... + 1809875.

Almost surely, 2^74780943975 is an apocalyptic number.

74780943975 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

74780943975 is a deficient number, since it is larger than the sum of its proper divisors (59180086137).

74780943975 is a wasteful number, since it uses less digits than its factorization.

74780943975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49768 (or 49760 counting only the distinct ones).

The product of its (nonzero) digits is 53343360, while the sum is 63.

The spelling of 74780943975 in words is "seventy-four billion, seven hundred eighty million, nine hundred forty-three thousand, nine hundred seventy-five".