73626373921 has 4 divisors (see below), whose sum is σ = 73722117700. Its totient is φ = 73530630144.

The previous prime is 73626373913. The next prime is 73626373967. The reversal of 73626373921 is 12937362637.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41508357696 + 32118016225 = 203736^2 + 179215^2 .

It is a cyclic number.

It is not a de Polignac number, because 73626373921 - 2³ = 73626373913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73626376921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47870736 + ... + 47872273.

It is an arithmetic number, because the mean of its divisors is an integer number (18430529425).

Almost surely, 2^73626373921 is an apocalyptic number.

It is an amenable number.

73626373921 is a deficient number, since it is larger than the sum of its proper divisors (95743779).

73626373921 is an equidigital number, since it uses as much as digits as its factorization.

73626373921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95743778.

The product of its digits is 1714608, while the sum is 49.

The spelling of 73626373921 in words is "seventy-three billion, six hundred twenty-six million, three hundred seventy-three thousand, nine hundred twenty-one".