10316620621 has 2 divisors, whose sum is σ = 10316620622. Its totient is φ = 10316620620.

The previous prime is 10316620597. The next prime is 10316620637. The reversal of 10316620621 is 12602661301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9615959721 + 700660900 = 98061^2 + 26470^2 .

It is an emirp because it is prime and its reverse (12602661301) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10316620621 is a prime.

It is a super-2 number, since 2×10316620621² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10316620621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10316620651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5158310310 + 5158310311.

It is an arithmetic number, because the mean of its divisors is an integer number (5158310311).

Almost surely, 2^10316620621 is an apocalyptic number.

It is an amenable number.

10316620621 is a deficient number, since it is larger than the sum of its proper divisors (1).

10316620621 is an equidigital number, since it uses as much as digits as its factorization.

10316620621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 10316620621 in words is "ten billion, three hundred sixteen million, six hundred twenty thousand, six hundred twenty-one".