11640893779 has 2 divisors, whose sum is σ = 11640893780. Its totient is φ = 11640893778.

The previous prime is 11640893749. The next prime is 11640893807. The reversal of 11640893779 is 97739804611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11640893779 - 2³³ = 3050959187 is a prime.

It is a super-3 number, since 3×11640893779³ (a number of 31 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (11640893749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5820446889 + 5820446890.

It is an arithmetic number, because the mean of its divisors is an integer number (5820446890).

Almost surely, 2^11640893779 is an apocalyptic number.

11640893779 is a deficient number, since it is larger than the sum of its proper divisors (1).

11640893779 is an equidigital number, since it uses as much as digits as its factorization.

11640893779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2286144, while the sum is 55.

The spelling of 11640893779 in words is "eleven billion, six hundred forty million, eight hundred ninety-three thousand, seven hundred seventy-nine".