73616777320 has 32 divisors (see below), whose sum is σ = 165665360520. Its totient is φ = 29441802240.

The previous prime is 73616777309. The next prime is 73616777323. The reversal of 73616777320 is 2377761637.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 38046062916 + 35570714404 = 195054^2 + 188602^2 .

It is not an unprimeable number, because it can be changed into a prime (73616777323) 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, 94504 + ... + 395176.

Almost surely, 2^73616777320 is an apocalyptic number.

It is an amenable number.

73616777320 is an abundant number, since it is smaller than the sum of its proper divisors (92048583200).

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

73616777320 is a wasteful number, since it uses less digits than its factorization.

73616777320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306805 (or 306801 counting only the distinct ones).

The product of its (nonzero) digits is 1555848, while the sum is 49.

The spelling of 73616777320 in words is "seventy-three billion, six hundred sixteen million, seven hundred seventy-seven thousand, three hundred twenty".