73534539980 has 24 divisors (see below), whose sum is σ = 168460946640. Its totient is φ = 26739832640.

The previous prime is 73534539973. The next prime is 73534540061. The reversal of 73534539980 is 8993543537.

It is a happy number.

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, 167123735 + ... + 167124174.

It is an arithmetic number, because the mean of its divisors is an integer number (7019206110).

Almost surely, 2^73534539980 is an apocalyptic number.

It is an amenable number.

73534539980 is an abundant number, since it is smaller than the sum of its proper divisors (94926406660).

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

73534539980 is a wasteful number, since it uses less digits than its factorization.

73534539980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334247929 (or 334247927 counting only the distinct ones).

The product of its (nonzero) digits is 12247200, while the sum is 56.

The spelling of 73534539980 in words is "seventy-three billion, five hundred thirty-four million, five hundred thirty-nine thousand, nine hundred eighty".