54842987851 has 2 divisors, whose sum is σ = 54842987852. Its totient is φ = 54842987850.

The previous prime is 54842987839. The next prime is 54842987861. The reversal of 54842987851 is 15878924845.

It is a happy number.

54842987851 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 54842987851 - 2²³ = 54834599243 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54842987851.

It is not a weakly prime, because it can be changed into another prime (54842987831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27421493925 + 27421493926.

It is an arithmetic number, because the mean of its divisors is an integer number (27421493926).

Almost surely, 2^54842987851 is an apocalyptic number.

54842987851 is a deficient number, since it is larger than the sum of its proper divisors (1).

54842987851 is an equidigital number, since it uses as much as digits as its factorization.

54842987851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25804800, while the sum is 61.

The spelling of 54842987851 in words is "fifty-four billion, eight hundred forty-two million, nine hundred eighty-seven thousand, eight hundred fifty-one".