73455272728 has 16 divisors (see below), whose sum is σ = 139092287760. Its totient is φ = 36363996000.

The previous prime is 73455272701. The next prime is 73455272777. The reversal of 73455272728 is 82727255437.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45454188 + ... + 45455803.

It is an arithmetic number, because the mean of its divisors is an integer number (8693267985).

Almost surely, 2^73455272728 is an apocalyptic number.

It is an amenable number.

73455272728 is a deficient number, since it is larger than the sum of its proper divisors (65637015032).

73455272728 is a wasteful number, since it uses less digits than its factorization.

73455272728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90910098 (or 90910094 counting only the distinct ones).

The product of its digits is 6585600, while the sum is 52.

The spelling of 73455272728 in words is "seventy-three billion, four hundred fifty-five million, two hundred seventy-two thousand, seven hundred twenty-eight".