999816072487 has 2 divisors, whose sum is σ = 999816072488. Its totient is φ = 999816072486.

The previous prime is 999816072419. The next prime is 999816072509. The reversal of 999816072487 is 784270618999.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999816072487 is a prime.

It is a pancake number, because a pancake can be divided into 999816072487 parts by 1414083 straight cuts.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999816072287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499908036243 + 499908036244.

It is an arithmetic number, because the mean of its divisors is an integer number (499908036244).

Almost surely, 2^999816072487 is an apocalyptic number.

999816072487 is a deficient number, since it is larger than the sum of its proper divisors (1).

999816072487 is an equidigital number, since it uses as much as digits as its factorization.

999816072487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 109734912, while the sum is 70.

The spelling of 999816072487 in words is "nine hundred ninety-nine billion, eight hundred sixteen million, seventy-two thousand, four hundred eighty-seven".