73732420645231 has 2 divisors, whose sum is σ = 73732420645232. Its totient is φ = 73732420645230.

The previous prime is 73732420645207. The next prime is 73732420645237. The reversal of 73732420645231 is 13254602423737.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 73732420645231 - 2⁴¹ = 71533397389679 is a prime.

It is a super-2 number, since 2×73732420645231² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73732420645237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36866210322615 + 36866210322616.

It is an arithmetic number, because the mean of its divisors is an integer number (36866210322616).

Almost surely, 2^{73732420645231} is an apocalyptic number.

73732420645231 is a deficient number, since it is larger than the sum of its proper divisors (1).

73732420645231 is an equidigital number, since it uses as much as digits as its factorization.

73732420645231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5080320, while the sum is 49.

The spelling of 73732420645231 in words is "seventy-three trillion, seven hundred thirty-two billion, four hundred twenty million, six hundred forty-five thousand, two hundred thirty-one".