99451370677 has 2 divisors, whose sum is σ = 99451370678. Its totient is φ = 99451370676.

The previous prime is 99451370647. The next prime is 99451370713. The reversal of 99451370677 is 77607315499.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72568816996 + 26882553681 = 269386^2 + 163959^2 .

It is a cyclic number.

It is not a de Polignac number, because 99451370677 - 2²³ = 99442982069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99451370647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49725685338 + 49725685339.

It is an arithmetic number, because the mean of its divisors is an integer number (49725685339).

Almost surely, 2^99451370677 is an apocalyptic number.

It is an amenable number.

99451370677 is a deficient number, since it is larger than the sum of its proper divisors (1).

99451370677 is an equidigital number, since it uses as much as digits as its factorization.

99451370677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10001880, while the sum is 58.

The spelling of 99451370677 in words is "ninety-nine billion, four hundred fifty-one million, three hundred seventy thousand, six hundred seventy-seven".