621232161262313 has 2 divisors, whose sum is σ = 621232161262314. Its totient is φ = 621232161262312.

The previous prime is 621232161262291. The next prime is 621232161262343. The reversal of 621232161262313 is 313262161232126.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 444270786263824 + 176961374998489 = 21077732^2 + 13302683^2 .

It is a cyclic number.

It is not a de Polignac number, because 621232161262313 - 2¹⁴ = 621232161245929 is a prime.

It is not a weakly prime, because it can be changed into another prime (621232161262343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310616080631156 + 310616080631157.

It is an arithmetic number, because the mean of its divisors is an integer number (310616080631157).

Almost surely, 2^{621232161262313} is an apocalyptic number.

It is an amenable number.

621232161262313 is a deficient number, since it is larger than the sum of its proper divisors (1).

621232161262313 is an equidigital number, since it uses as much as digits as its factorization.

621232161262313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 41.

The spelling of 621232161262313 in words is "six hundred twenty-one trillion, two hundred thirty-two billion, one hundred sixty-one million, two hundred sixty-two thousand, three hundred thirteen".