10457566621 has 2 divisors, whose sum is σ = 10457566622. Its totient is φ = 10457566620.

The previous prime is 10457566549. The next prime is 10457566703. The reversal of 10457566621 is 12666575401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6991300996 + 3466265625 = 83614^2 + 58875^2 .

It is a cyclic number.

It is not a de Polignac number, because 10457566621 - 2⁹ = 10457566109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10457566421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5228783310 + 5228783311.

It is an arithmetic number, because the mean of its divisors is an integer number (5228783311).

Almost surely, 2^10457566621 is an apocalyptic number.

It is an amenable number.

10457566621 is a deficient number, since it is larger than the sum of its proper divisors (1).

10457566621 is an equidigital number, since it uses as much as digits as its factorization.

10457566621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 43.

The spelling of 10457566621 in words is "ten billion, four hundred fifty-seven million, five hundred sixty-six thousand, six hundred twenty-one".