75661216247020 has 48 divisors (see below), whose sum is σ = 162799115514336. Its totient is φ = 29519937216000.

The previous prime is 75661216247009. The next prime is 75661216247027. The reversal of 75661216247020 is 2074261216657.

It is not an unprimeable number, because it can be changed into a prime (75661216247027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6194526 + ... + 13772965.

It is an arithmetic number, because the mean of its divisors is an integer number (3391648239882).

Almost surely, 2^{75661216247020} is an apocalyptic number.

It is an amenable number.

75661216247020 is an abundant number, since it is smaller than the sum of its proper divisors (87137899267316).

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

75661216247020 is a wasteful number, since it uses less digits than its factorization.

75661216247020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19972162 (or 19972160 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 49.

The spelling of 75661216247020 in words is "seventy-five trillion, six hundred sixty-one billion, two hundred sixteen million, two hundred forty-seven thousand, twenty".