55665265867 has 2 divisors, whose sum is σ = 55665265868. Its totient is φ = 55665265866.

The previous prime is 55665265841. The next prime is 55665265871. The reversal of 55665265867 is 76856256655.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55665265867 - 2²³ = 55656877259 is a prime.

It is not a weakly prime, because it can be changed into another prime (55665265807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27832632933 + 27832632934.

It is an arithmetic number, because the mean of its divisors is an integer number (27832632934).

Almost surely, 2^55665265867 is an apocalyptic number.

55665265867 is a deficient number, since it is larger than the sum of its proper divisors (1).

55665265867 is an equidigital number, since it uses as much as digits as its factorization.

55665265867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720000, while the sum is 61.

The spelling of 55665265867 in words is "fifty-five billion, six hundred sixty-five million, two hundred sixty-five thousand, eight hundred sixty-seven".