11418972913 has 6 divisors (see below), whose sum is σ = 12130189526. Its totient is φ = 10747268352.

The previous prime is 11418972889. The next prime is 11418972931. The reversal of 11418972913 is 31927981411.

It can be written as a sum of positive squares in 3 ways, for example, as 5163428449 + 6255544464 = 71857^2 + 79092^2 .

It is not a de Polignac number, because 11418972913 - 2²¹ = 11416875761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11418972953) 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 5 ways as a sum of consecutive naturals, for example, 19755720 + ... + 19756297.

Almost surely, 2^11418972913 is an apocalyptic number.

It is an amenable number.

11418972913 is a deficient number, since it is larger than the sum of its proper divisors (711216613).

11418972913 is an equidigital number, since it uses as much as digits as its factorization.

11418972913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39512051 (or 39512034 counting only the distinct ones).

The product of its digits is 108864, while the sum is 46.

The spelling of 11418972913 in words is "eleven billion, four hundred eighteen million, nine hundred seventy-two thousand, nine hundred thirteen".