10621404755579 has 2 divisors, whose sum is σ = 10621404755580. Its totient is φ = 10621404755578.

The previous prime is 10621404755557. The next prime is 10621404755587. The reversal of 10621404755579 is 97555740412601.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10621404755579 - 2¹² = 10621404751483 is a prime.

It is a super-2 number, since 2×10621404755579² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10621404755509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5310702377789 + 5310702377790.

It is an arithmetic number, because the mean of its divisors is an integer number (5310702377790).

Almost surely, 2^{10621404755579} is an apocalyptic number.

10621404755579 is a deficient number, since it is larger than the sum of its proper divisors (1).

10621404755579 is an equidigital number, since it uses as much as digits as its factorization.

10621404755579 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584000, while the sum is 56.

The spelling of 10621404755579 in words is "ten trillion, six hundred twenty-one billion, four hundred four million, seven hundred fifty-five thousand, five hundred seventy-nine".