54942857947 has 2 divisors, whose sum is σ = 54942857948. Its totient is φ = 54942857946.

The previous prime is 54942857933. The next prime is 54942857989. The reversal of 54942857947 is 74975824945.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54942857947 - 2³¹ = 52795374299 is a prime.

It is not a weakly prime, because it can be changed into another prime (54942857147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27471428973 + 27471428974.

It is an arithmetic number, because the mean of its divisors is an integer number (27471428974).

Almost surely, 2^54942857947 is an apocalyptic number.

54942857947 is a deficient number, since it is larger than the sum of its proper divisors (1).

54942857947 is an equidigital number, since it uses as much as digits as its factorization.

54942857947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 101606400, while the sum is 64.

The spelling of 54942857947 in words is "fifty-four billion, nine hundred forty-two million, eight hundred fifty-seven thousand, nine hundred forty-seven".