10636415621 has 4 divisors (see below), whose sum is σ = 11454601452. Its totient is φ = 9818229792.

The previous prime is 10636415597. The next prime is 10636415623. The reversal of 10636415621 is 12651463601.

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 719044225 + 9917371396 = 26815^2 + 99586^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10636415621 is a prime.

It is a super-2 number, since 2×10636415621² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10636415623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 409092896 + ... + 409092921.

It is an arithmetic number, because the mean of its divisors is an integer number (2863650363).

Almost surely, 2^10636415621 is an apocalyptic number.

It is an amenable number.

10636415621 is a deficient number, since it is larger than the sum of its proper divisors (818185831).

10636415621 is an equidigital number, since it uses as much as digits as its factorization.

10636415621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818185830.

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 10636415621 in words is "ten billion, six hundred thirty-six million, four hundred fifteen thousand, six hundred twenty-one".