54778538599 has 2 divisors, whose sum is σ = 54778538600. Its totient is φ = 54778538598.

The previous prime is 54778538579. The next prime is 54778538603. The reversal of 54778538599 is 99583587745.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 54778538599 - 2⁷ = 54778538471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54778538519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27389269299 + 27389269300.

It is an arithmetic number, because the mean of its divisors is an integer number (27389269300).

Almost surely, 2^54778538599 is an apocalyptic number.

54778538599 is a deficient number, since it is larger than the sum of its proper divisors (1).

54778538599 is an equidigital number, since it uses as much as digits as its factorization.

54778538599 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024000, while the sum is 70.

The spelling of 54778538599 in words is "fifty-four billion, seven hundred seventy-eight million, five hundred thirty-eight thousand, five hundred ninety-nine".