72421660700 has 36 divisors (see below), whose sum is σ = 157212198192. Its totient is φ = 28958121600.

The previous prime is 72421660627. The next prime is 72421660769. The reversal of 72421660700 is 706612427.

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 11 ways as a sum of consecutive naturals, for example, 147305 + ... + 408095.

Almost surely, 2^72421660700 is an apocalyptic number.

It is an amenable number.

72421660700 is an abundant number, since it is smaller than the sum of its proper divisors (84790537492).

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

72421660700 is a wasteful number, since it uses less digits than its factorization.

72421660700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263582 (or 263575 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The spelling of 72421660700 in words is "seventy-two billion, four hundred twenty-one million, six hundred sixty thousand, seven hundred".