73220917530 has 32 divisors (see below), whose sum is σ = 175785883200. Its totient is φ = 19519391232.

The previous prime is 73220917513. The next prime is 73220917543. The reversal of 73220917530 is 3571902237.

It is a super-2 number, since 2×73220917530² (a number of 23 digits) contains 22 as substring.

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, 290020 + ... + 480159.

It is an arithmetic number, because the mean of its divisors is an integer number (5493308850).

Almost surely, 2^73220917530 is an apocalyptic number.

73220917530 is an abundant number, since it is smaller than the sum of its proper divisors (102564965670).

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

73220917530 is a wasteful number, since it uses less digits than its factorization.

73220917530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773358.

The product of its (nonzero) digits is 79380, while the sum is 39.

The spelling of 73220917530 in words is "seventy-three billion, two hundred twenty million, nine hundred seventeen thousand, five hundred thirty".