99377644677399 has 24 divisors (see below), whose sum is σ = 156700670136192. Its totient is φ = 60188262610320.

The previous prime is 99377644677359. The next prime is 99377644677439.

99377644677399 is a `hidden beast` number, since 9 + 9 + 3 + 7 + 7 + 6 + 446 + 7 + 73 + 99 = 666.

99377644677399 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (99377644677359) and next prime (99377644677439).

It is not a de Polignac number, because 99377644677399 - 2¹⁹ = 99377644153111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99377644677359) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 338293707 + ... + 338587340.

It is an arithmetic number, because the mean of its divisors is an integer number (6529194589008).

Almost surely, 2^{99377644677399} is an apocalyptic number.

99377644677399 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

99377644677399 is a deficient number, since it is larger than the sum of its proper divisors (57323025458793).

99377644677399 is a wasteful number, since it uses less digits than its factorization.

99377644677399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676882547 (or 676882544 counting only the distinct ones).

The product of its digits is 81663349824, while the sum is 90.

The spelling of 99377644677399 in words is "ninety-nine trillion, three hundred seventy-seven billion, six hundred forty-four million, six hundred seventy-seven thousand, three hundred ninety-nine".