11418204971 has 4 divisors (see below), whose sum is σ = 11419771944. Its totient is φ = 11416638000.

The previous prime is 11418204961. The next prime is 11418204979. The reversal of 11418204971 is 17940281411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17940281411 = 13 ⋅1380021647.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11418204971 is a prime.

It is a super-2 number, since 2×11418204971² (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 (11418204979) 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, 772505 + ... + 787146.

It is an arithmetic number, because the mean of its divisors is an integer number (2854942986).

Almost surely, 2^11418204971 is an apocalyptic number.

11418204971 is a deficient number, since it is larger than the sum of its proper divisors (1566973).

11418204971 is an equidigital number, since it uses as much as digits as its factorization.

11418204971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1566972.

The product of its (nonzero) digits is 16128, while the sum is 38.

The spelling of 11418204971 in words is "eleven billion, four hundred eighteen million, two hundred four thousand, nine hundred seventy-one".