73816326545 has 32 divisors (see below), whose sum is σ = 96883211040. Its totient is φ = 53665597440.

The previous prime is 73816326527. The next prime is 73816326553. The reversal of 73816326545 is 54562361837.

It can be written as a sum of positive squares in 16 ways, for example, as 46877013121 + 26939313424 = 216511^2 + 164132^2 .

It is not a de Polignac number, because 73816326545 - 2²⁶ = 73749217681 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 73816326493 and 73816326502.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1079165 + ... + 1145525.

It is an arithmetic number, because the mean of its divisors is an integer number (3027600345).

Almost surely, 2^73816326545 is an apocalyptic number.

It is an amenable number.

73816326545 is a deficient number, since it is larger than the sum of its proper divisors (23066884495).

73816326545 is a wasteful number, since it uses less digits than its factorization.

73816326545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66645.

The product of its digits is 3628800, while the sum is 50.

The spelling of 73816326545 in words is "seventy-three billion, eight hundred sixteen million, three hundred twenty-six thousand, five hundred forty-five".