16373077472621 has 2 divisors, whose sum is σ = 16373077472622. Its totient is φ = 16373077472620.

The previous prime is 16373077472599. The next prime is 16373077472623. The reversal of 16373077472621 is 12627477037361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16000720008100 + 372357464521 = 4000090^2 + 610211^2 .

It is a cyclic number.

It is not a de Polignac number, because 16373077472621 - 2²⁶ = 16373010363757 is a prime.

Together with 16373077472623, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16373077472623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8186538736310 + 8186538736311.

It is an arithmetic number, because the mean of its divisors is an integer number (8186538736311).

Almost surely, 2^{16373077472621} is an apocalyptic number.

It is an amenable number.

16373077472621 is a deficient number, since it is larger than the sum of its proper divisors (1).

16373077472621 is an equidigital number, since it uses as much as digits as its factorization.

16373077472621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12446784, while the sum is 56.

The spelling of 16373077472621 in words is "sixteen trillion, three hundred seventy-three billion, seventy-seven million, four hundred seventy-two thousand, six hundred twenty-one".