373534573721 has 2 divisors, whose sum is σ = 373534573722. Its totient is φ = 373534573720.

The previous prime is 373534573717. The next prime is 373534573739. The reversal of 373534573721 is 127375435373.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 318534943321 + 54999630400 = 564389^2 + 234520^2 .

It is a cyclic number.

It is not a de Polignac number, because 373534573721 - 2² = 373534573717 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 373534573721.

It is not a weakly prime, because it can be changed into another prime (373534573121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186767286860 + 186767286861.

It is an arithmetic number, because the mean of its divisors is an integer number (186767286861).

Almost surely, 2^373534573721 is an apocalyptic number.

It is an amenable number.

373534573721 is a deficient number, since it is larger than the sum of its proper divisors (1).

373534573721 is an equidigital number, since it uses as much as digits as its factorization.

373534573721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5556600, while the sum is 50.

The spelling of 373534573721 in words is "three hundred seventy-three billion, five hundred thirty-four million, five hundred seventy-three thousand, seven hundred twenty-one".