83866382451 has 16 divisors (see below), whose sum is σ = 130785782400. Its totient is φ = 52968241224.

The previous prime is 83866382447. The next prime is 83866382459. The reversal of 83866382451 is 15428366838.

83866382451 is a `hidden beast` number, since 83 + 86 + 6 + 38 + 2 + 451 = 666.

It is not a de Polignac number, because 83866382451 - 2² = 83866382447 is a prime.

It is a Smith number, since the sum of its digits (54) 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 (83866382459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81740601 + ... + 81741626.

It is an arithmetic number, because the mean of its divisors is an integer number (8174111400).

Almost surely, 2^83866382451 is an apocalyptic number.

83866382451 is a deficient number, since it is larger than the sum of its proper divisors (46919399949).

83866382451 is a wasteful number, since it uses less digits than its factorization.

83866382451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163482255 (or 163482249 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 54.

The spelling of 83866382451 in words is "eighty-three billion, eight hundred sixty-six million, three hundred eighty-two thousand, four hundred fifty-one".