73417507920 has 80 divisors (see below), whose sum is σ = 252882534720. Its totient is φ = 19578001536.

The previous prime is 73417507913. The next prime is 73417507937. The reversal of 73417507920 is 2970571437.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16992634 + ... + 16996953.

It is an arithmetic number, because the mean of its divisors is an integer number (3161031684).

Almost surely, 2^73417507920 is an apocalyptic number.

It is an amenable number.

73417507920 is an abundant number, since it is smaller than the sum of its proper divisors (179465026800).

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

73417507920 is a wasteful number, since it uses less digits than its factorization.

73417507920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33989609 (or 33989597 counting only the distinct ones).

The product of its (nonzero) digits is 370440, while the sum is 45.

The spelling of 73417507920 in words is "seventy-three billion, four hundred seventeen million, five hundred seven thousand, nine hundred twenty".