10520421250561 has 8 divisors (see below), whose sum is σ = 10739249163648. Its totient is φ = 10303555920000.

The previous prime is 10520421250511. The next prime is 10520421250567. The reversal of 10520421250561 is 16505212402501.

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

It is a cyclic number.

It is not a de Polignac number, because 10520421250561 - 2²⁷ = 10520287032833 is a prime.

It is a super-2 number, since 2×10520421250561² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10520421250567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 490634800 + ... + 490656241.

It is an arithmetic number, because the mean of its divisors is an integer number (1342406145456).

Almost surely, 2^{10520421250561} is an apocalyptic number.

It is an amenable number.

10520421250561 is a deficient number, since it is larger than the sum of its proper divisors (218827913087).

10520421250561 is an equidigital number, since it uses as much as digits as its factorization.

10520421250561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981291263.

The product of its (nonzero) digits is 24000, while the sum is 34.

The spelling of 10520421250561 in words is "ten trillion, five hundred twenty billion, four hundred twenty-one million, two hundred fifty thousand, five hundred sixty-one".