55578771883 has 2 divisors, whose sum is σ = 55578771884. Its totient is φ = 55578771882.

The previous prime is 55578771799. The next prime is 55578771901. The reversal of 55578771883 is 38817787555.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55578771883 - 2²¹ = 55576674731 is a prime.

It is not a weakly prime, because it can be changed into another prime (55578772883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27789385941 + 27789385942.

It is an arithmetic number, because the mean of its divisors is an integer number (27789385942).

Almost surely, 2^55578771883 is an apocalyptic number.

55578771883 is a deficient number, since it is larger than the sum of its proper divisors (1).

55578771883 is an equidigital number, since it uses as much as digits as its factorization.

55578771883 is an evil number, because the sum of its binary digits is even.

The product of its digits is 65856000, while the sum is 64.

The spelling of 55578771883 in words is "fifty-five billion, five hundred seventy-eight million, seven hundred seventy-one thousand, eight hundred eighty-three".