75981918940 has 24 divisors (see below), whose sum is σ = 160371997632. Its totient is φ = 30238488000.

The previous prime is 75981918937. The next prime is 75981918941. The reversal of 75981918940 is 4981918957.

It is a hoax number, since the sum of its digits (61) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75981918941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9638436 + ... + 9646315.

It is an arithmetic number, because the mean of its divisors is an integer number (6682166568).

Almost surely, 2^75981918940 is an apocalyptic number.

It is an amenable number.

75981918940 is an abundant number, since it is smaller than the sum of its proper divisors (84390078692).

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

75981918940 is a wasteful number, since it uses less digits than its factorization.

75981918940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19284957 (or 19284955 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 61.

The spelling of 75981918940 in words is "seventy-five billion, nine hundred eighty-one million, nine hundred eighteen thousand, nine hundred forty".