21611462313 has 32 divisors (see below), whose sum is σ = 35389384704. Its totient is φ = 11449481472.

The previous prime is 21611462297. The next prime is 21611462329. The reversal of 21611462313 is 31326411612.

It is an interprime number because it is at equal distance from previous prime (21611462297) and next prime (21611462329).

It is not a de Polignac number, because 21611462313 - 2⁴ = 21611462297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21611462363) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 427845 + ... + 475682.

It is an arithmetic number, because the mean of its divisors is an integer number (1105918272).

Almost surely, 2^21611462313 is an apocalyptic number.

It is an amenable number.

21611462313 is a deficient number, since it is larger than the sum of its proper divisors (13777922391).

21611462313 is a wasteful number, since it uses less digits than its factorization.

21611462313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903621.

The product of its digits is 5184, while the sum is 30.

Adding to 21611462313 its reverse (31326411612), we get a palindrome (52937873925).

The spelling of 21611462313 in words is "twenty-one billion, six hundred eleven million, four hundred sixty-two thousand, three hundred thirteen".