10656721010451 has 8 divisors (see below), whose sum is σ = 14208990571984. Its totient is φ = 7104466061280.

The previous prime is 10656721010407. The next prime is 10656721010473. The reversal of 10656721010451 is 15401012765601.

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

It is a de Polignac number, because none of the positive numbers 2^k-10656721010451 is a prime.

It is a super-2 number, since 2×10656721010451² (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 (10656721010051) 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 7 ways as a sum of consecutive naturals, for example, 1819996 + ... + 4962441.

It is an arithmetic number, because the mean of its divisors is an integer number (1776123821498).

Almost surely, 2^{10656721010451} is an apocalyptic number.

10656721010451 is a deficient number, since it is larger than the sum of its proper divisors (3552269561533).

10656721010451 is an equidigital number, since it uses as much as digits as its factorization.

10656721010451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7306181.

The product of its (nonzero) digits is 50400, while the sum is 39.

The spelling of 10656721010451 in words is "ten trillion, six hundred fifty-six billion, seven hundred twenty-one million, ten thousand, four hundred fifty-one".