10402621455601 has 4 divisors (see below), whose sum is σ = 11014540364772. Its totient is φ = 9790702546432.

The previous prime is 10402621455593. The next prime is 10402621455623. The reversal of 10402621455601 is 10655412620401.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6870191421025 + 3532430034576 = 2621105^2 + 1879476^2 .

It is a cyclic number.

It is not a de Polignac number, because 10402621455601 - 2³ = 10402621455593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10402621425601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305959454560 + ... + 305959454593.

It is an arithmetic number, because the mean of its divisors is an integer number (2753635091193).

Almost surely, 2^{10402621455601} is an apocalyptic number.

It is an amenable number.

10402621455601 is a deficient number, since it is larger than the sum of its proper divisors (611918909171).

10402621455601 is an equidigital number, since it uses as much as digits as its factorization.

10402621455601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611918909170.

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 10402621455601 in words is "ten trillion, four hundred two billion, six hundred twenty-one million, four hundred fifty-five thousand, six hundred one".