7875863538867 has 24 divisors (see below), whose sum is σ = 11908620592128. Its totient is φ = 5009636041200.

The previous prime is 7875863538863. The next prime is 7875863538877. The reversal of 7875863538867 is 7688353685787.

7875863538867 is a `hidden beast` number, since 7 + 8 + 75 + 8 + 6 + 3 + 538 + 8 + 6 + 7 = 666.

It is not a de Polignac number, because 7875863538867 - 2² = 7875863538863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7875863538863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 198775273 + ... + 198814890.

It is an arithmetic number, because the mean of its divisors is an integer number (496192524672).

Almost surely, 2^{7875863538867} is an apocalyptic number.

7875863538867 is a deficient number, since it is larger than the sum of its proper divisors (4032757053261).

7875863538867 is a wasteful number, since it uses less digits than its factorization.

7875863538867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397590271 (or 397590268 counting only the distinct ones).

The product of its digits is 11379916800, while the sum is 81.

The spelling of 7875863538867 in words is "seven trillion, eight hundred seventy-five billion, eight hundred sixty-three million, five hundred thirty-eight thousand, eight hundred sixty-seven".