72010522821 has 8 divisors (see below), whose sum is σ = 99111257344. Its totient is φ = 46458401760.

The previous prime is 72010522813. The next prime is 72010522847. The reversal of 72010522821 is 12822501027.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72010522821 - 2³ = 72010522813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72010524821) by changing a digit.

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, 387153256 + ... + 387153441.

It is an arithmetic number, because the mean of its divisors is an integer number (12388907168).

Almost surely, 2^72010522821 is an apocalyptic number.

It is an amenable number.

72010522821 is a deficient number, since it is larger than the sum of its proper divisors (27100734523).

72010522821 is a wasteful number, since it uses less digits than its factorization.

72010522821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774306731.

The product of its (nonzero) digits is 4480, while the sum is 30.

The spelling of 72010522821 in words is "seventy-two billion, ten million, five hundred twenty-two thousand, eight hundred twenty-one".