11516412949 has 2 divisors, whose sum is σ = 11516412950. Its totient is φ = 11516412948.

The previous prime is 11516412937. The next prime is 11516412989. The reversal of 11516412949 is 94921461511.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7742768049 + 3773644900 = 87993^2 + 61430^2 .

It is a cyclic number.

It is not a de Polignac number, because 11516412949 - 2⁷ = 11516412821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11516412989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5758206474 + 5758206475.

It is an arithmetic number, because the mean of its divisors is an integer number (5758206475).

Almost surely, 2^11516412949 is an apocalyptic number.

It is an amenable number.

11516412949 is a deficient number, since it is larger than the sum of its proper divisors (1).

11516412949 is an equidigital number, since it uses as much as digits as its factorization.

11516412949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 43.

The spelling of 11516412949 in words is "eleven billion, five hundred sixteen million, four hundred twelve thousand, nine hundred forty-nine".