10621253443 has 4 divisors (see below), whose sum is σ = 10641640248. Its totient is φ = 10600866640.

The previous prime is 10621253413. The next prime is 10621253471. The reversal of 10621253443 is 34435212601.

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

It is a cyclic number.

It is not a de Polignac number, because 10621253443 - 2¹³ = 10621245251 is a prime.

It is a super-2 number, since 2×10621253443² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10621253413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10192621 + ... + 10193662.

It is an arithmetic number, because the mean of its divisors is an integer number (2660410062).

Almost surely, 2^10621253443 is an apocalyptic number.

10621253443 is a deficient number, since it is larger than the sum of its proper divisors (20386805).

10621253443 is an equidigital number, since it uses as much as digits as its factorization.

10621253443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20386804.

The product of its (nonzero) digits is 17280, while the sum is 31.

The spelling of 10621253443 in words is "ten billion, six hundred twenty-one million, two hundred fifty-three thousand, four hundred forty-three".