54566405987 has 2 divisors, whose sum is σ = 54566405988. Its totient is φ = 54566405986.

The previous prime is 54566405981. The next prime is 54566406023. The reversal of 54566405987 is 78950466545.

54566405987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54566405987 - 2²⁰ = 54565357411 is a prime.

It is not a weakly prime, because it can be changed into another prime (54566405981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27283202993 + 27283202994.

It is an arithmetic number, because the mean of its divisors is an integer number (27283202994).

Almost surely, 2^54566405987 is an apocalyptic number.

54566405987 is a deficient number, since it is larger than the sum of its proper divisors (1).

54566405987 is an equidigital number, since it uses as much as digits as its factorization.

54566405987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288000, while the sum is 59.

The spelling of 54566405987 in words is "fifty-four billion, five hundred sixty-six million, four hundred five thousand, nine hundred eighty-seven".