73437593611021 has 16 divisors (see below), whose sum is σ = 75454818566400. Its totient is φ = 71431293225600.

The previous prime is 73437593611013. The next prime is 73437593611027. The reversal of 73437593611021 is 12011639573437.

It is a cyclic number.

It is not a de Polignac number, because 73437593611021 - 2³ = 73437593611013 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73437593611021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73437593611027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35861920 + ... + 37854358.

It is an arithmetic number, because the mean of its divisors is an integer number (4715926160400).

Almost surely, 2^{73437593611021} is an apocalyptic number.

It is an amenable number.

73437593611021 is a deficient number, since it is larger than the sum of its proper divisors (2017224955379).

73437593611021 is a wasteful number, since it uses less digits than its factorization.

73437593611021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1995180.

The product of its (nonzero) digits is 2857680, while the sum is 52.

The spelling of 73437593611021 in words is "seventy-three trillion, four hundred thirty-seven billion, five hundred ninety-three million, six hundred eleven thousand, twenty-one".