999874757887 has 2 divisors, whose sum is σ = 999874757888. Its totient is φ = 999874757886.

The previous prime is 999874757881. The next prime is 999874757891. The reversal of 999874757887 is 788757478999.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999874757887 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 999874757798 and 999874757807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999874757881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499937378943 + 499937378944.

It is an arithmetic number, because the mean of its divisors is an integer number (499937378944).

Almost surely, 2^999874757887 is an apocalyptic number.

999874757887 is a deficient number, since it is larger than the sum of its proper divisors (1).

999874757887 is an equidigital number, since it uses as much as digits as its factorization.

999874757887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17923368960, while the sum is 88.

The spelling of 999874757887 in words is "nine hundred ninety-nine billion, eight hundred seventy-four million, seven hundred fifty-seven thousand, eight hundred eighty-seven".