10621441425565 has 8 divisors (see below), whose sum is σ = 13056601167288. Its totient is φ = 8289905502720.

The previous prime is 10621441425559. The next prime is 10621441425589. The reversal of 10621441425565 is 56552414412601.

It can be written as a sum of positive squares in 4 ways, for example, as 507750304356 + 10113691121209 = 712566^2 + 3180203^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10621441425565 - 2¹¹ = 10621441423517 is a prime.

It is a super-2 number, since 2×10621441425565² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25905954492 + ... + 25905954901.

It is an arithmetic number, because the mean of its divisors is an integer number (1632075145911).

Almost surely, 2^{10621441425565} is an apocalyptic number.

It is an amenable number.

10621441425565 is a deficient number, since it is larger than the sum of its proper divisors (2435159741723).

10621441425565 is an equidigital number, since it uses as much as digits as its factorization.

10621441425565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51811909439.

The product of its (nonzero) digits is 1152000, while the sum is 46.

The spelling of 10621441425565 in words is "ten trillion, six hundred twenty-one billion, four hundred forty-one million, four hundred twenty-five thousand, five hundred sixty-five".