73311732420 has 24 divisors (see below), whose sum is σ = 205272850944. Its totient is φ = 19549795296.

The previous prime is 73311732367. The next prime is 73311732443. The reversal of 73311732420 is 2423711337.

It is a super-2 number, since 2×73311732420² (a number of 23 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 610931044 + ... + 610931163.

It is an arithmetic number, because the mean of its divisors is an integer number (8553035456).

Almost surely, 2^73311732420 is an apocalyptic number.

It is an amenable number.

73311732420 is an abundant number, since it is smaller than the sum of its proper divisors (131961118524).

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

73311732420 is a wasteful number, since it uses less digits than its factorization.

73311732420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221862219 (or 1221862217 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 33.

The spelling of 73311732420 in words is "seventy-three billion, three hundred eleven million, seven hundred thirty-two thousand, four hundred twenty".