72323622480 has 80 divisors (see below), whose sum is σ = 231435615744. Its totient is φ = 18664158720.

The previous prime is 72323622473. The next prime is 72323622533. The reversal of 72323622480 is 8422632327.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×72323622480² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4853019 + ... + 4867898.

Almost surely, 2^72323622480 is an apocalyptic number.

It is an amenable number.

72323622480 is an abundant number, since it is smaller than the sum of its proper divisors (159111993264).

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

72323622480 is a wasteful number, since it uses less digits than its factorization.

72323622480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9720964 (or 9720958 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 39.

The spelling of 72323622480 in words is "seventy-two billion, three hundred twenty-three million, six hundred twenty-two thousand, four hundred eighty".