99995963647 has 2 divisors, whose sum is σ = 99995963648. Its totient is φ = 99995963646.

The previous prime is 99995963629. The next prime is 99995963659. The reversal of 99995963647 is 74636959999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99995963647 - 2³⁵ = 65636225279 is a prime.

It is a congruent number.

It is a weakly prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49997981823 + 49997981824.

It is an arithmetic number, because the mean of its divisors is an integer number (49997981824).

Almost surely, 2^99995963647 is an apocalyptic number.

99995963647 is a deficient number, since it is larger than the sum of its proper divisors (1).

99995963647 is an equidigital number, since it uses as much as digits as its factorization.

99995963647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 892820880, while the sum is 76.

The spelling of 99995963647 in words is "ninety-nine billion, nine hundred ninety-five million, nine hundred sixty-three thousand, six hundred forty-seven".