72821326908 has 36 divisors (see below), whose sum is σ = 186767649320. Its totient is φ = 22067068320.

The previous prime is 72821326889. The next prime is 72821326909. The reversal of 72821326908 is 80962312827.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72821326909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25074763 + ... + 25077666.

Almost surely, 2^72821326908 is an apocalyptic number.

It is an amenable number.

72821326908 is an abundant number, since it is smaller than the sum of its proper divisors (113946322412).

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

72821326908 is a wasteful number, since it uses less digits than its factorization.

72821326908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50152458 (or 50152445 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 48.

The spelling of 72821326908 in words is "seventy-two billion, eight hundred twenty-one million, three hundred twenty-six thousand, nine hundred eight".