99397031677636 has 243 divisors, whose sum is σ = 228112563530061. Its totient is φ = 37757649283200.

The previous prime is 99397031677633. The next prime is 99397031677667. The reversal of 99397031677636 is 63677613079399.

The square root of 99397031677636 is 9969806.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 4789505988036 + 94607525689600 = 2188494^2 + 9726640^2 .

It is a Smith number, since the sum of its digits (76) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (99397031677633) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 62949354295 + ... + 62949355873.

Almost surely, 2^{99397031677636} is an apocalyptic number.

99397031677636 is the 9969806-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99397031677636

99397031677636 is an abundant number, since it is smaller than the sum of its proper divisors (128715531852425).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99397031677636 is a wasteful number, since it uses less digits than its factorization.

99397031677636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3280 (or 1640 counting only the distinct ones).

The product of its (nonzero) digits is 1458274104, while the sum is 76.

The spelling of 99397031677636 in words is "ninety-nine trillion, three hundred ninety-seven billion, thirty-one million, six hundred seventy-seven thousand, six hundred thirty-six".