11555871479 has 2 divisors, whose sum is σ = 11555871480. Its totient is φ = 11555871478.

The previous prime is 11555871433. The next prime is 11555871559. The reversal of 11555871479 is 97417855511.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11555871479 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11555871479.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11555871409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5777935739 + 5777935740.

It is an arithmetic number, because the mean of its divisors is an integer number (5777935740).

Almost surely, 2^11555871479 is an apocalyptic number.

11555871479 is a deficient number, since it is larger than the sum of its proper divisors (1).

11555871479 is an equidigital number, since it uses as much as digits as its factorization.

11555871479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1764000, while the sum is 53.

The spelling of 11555871479 in words is "eleven billion, five hundred fifty-five million, eight hundred seventy-one thousand, four hundred seventy-nine".