74917871946 has 16 divisors (see below), whose sum is σ = 166484160000. Its totient is φ = 24972623964.

The previous prime is 74917871939. The next prime is 74917871971. The reversal of 74917871946 is 64917871947.

74917871946 is a `hidden beast` number, since 7 + 491 + 78 + 71 + 9 + 4 + 6 = 666.

It is a super-2 number, since 2×74917871946² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 693683946 + ... + 693684053.

It is an arithmetic number, because the mean of its divisors is an integer number (10405260000).

Almost surely, 2^74917871946 is an apocalyptic number.

74917871946 is an abundant number, since it is smaller than the sum of its proper divisors (91566288054).

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

74917871946 is a wasteful number, since it uses less digits than its factorization.

74917871946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1387368010 (or 1387368004 counting only the distinct ones).

The product of its digits is 21337344, while the sum is 63.

Subtracting from 74917871946 its reverse (64917871947), we obtain a palindrome (9999999999).

The spelling of 74917871946 in words is "seventy-four billion, nine hundred seventeen million, eight hundred seventy-one thousand, nine hundred forty-six".