72514220621 has 8 divisors (see below), whose sum is σ = 73550851200. Its totient is φ = 71478015280.

The previous prime is 72514220609. The next prime is 72514220629. The reversal of 72514220621 is 12602241527.

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

It is a cyclic number.

It is not a de Polignac number, because 72514220621 - 2⁶ = 72514220557 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 (72514220629) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 245435 + ... + 453063.

It is an arithmetic number, because the mean of its divisors is an integer number (9193856400).

Almost surely, 2^72514220621 is an apocalyptic number.

72514220621 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

72514220621 is a deficient number, since it is larger than the sum of its proper divisors (1036630579).

72514220621 is a wasteful number, since it uses less digits than its factorization.

72514220621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212619.

The product of its (nonzero) digits is 13440, while the sum is 32.

The spelling of 72514220621 in words is "seventy-two billion, five hundred fourteen million, two hundred twenty thousand, six hundred twenty-one".