75420815408 has 10 divisors (see below), whose sum is σ = 146127829884. Its totient is φ = 37710407696.

The previous prime is 75420815357. The next prime is 75420815423. The reversal of 75420815408 is 80451802457.

It is a super-2 number, since 2×75420815408² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2356900466 + ... + 2356900497.

Almost surely, 2^75420815408 is an apocalyptic number.

It is an amenable number.

75420815408 is a deficient number, since it is larger than the sum of its proper divisors (70707014476).

75420815408 is a wasteful number, since it uses less digits than its factorization.

75420815408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4713800971 (or 4713800965 counting only the distinct ones).

The product of its (nonzero) digits is 358400, while the sum is 44.

The spelling of 75420815408 in words is "seventy-five billion, four hundred twenty million, eight hundred fifteen thousand, four hundred eight".