368337001621 has 2 divisors, whose sum is σ = 368337001622. Its totient is φ = 368337001620.

The previous prime is 368337001609. The next prime is 368337001657. The reversal of 368337001621 is 126100733863.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 264386214225 + 103950787396 = 514185^2 + 322414^2 .

It is a cyclic number.

It is not a de Polignac number, because 368337001621 - 2²³ = 368328613013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (368337041621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 184168500810 + 184168500811.

It is an arithmetic number, because the mean of its divisors is an integer number (184168500811).

Almost surely, 2^368337001621 is an apocalyptic number.

It is an amenable number.

368337001621 is a deficient number, since it is larger than the sum of its proper divisors (1).

368337001621 is an equidigital number, since it uses as much as digits as its factorization.

368337001621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 40.

The spelling of 368337001621 in words is "three hundred sixty-eight billion, three hundred thirty-seven million, one thousand, six hundred twenty-one".