76538886671986 has 64 divisors (see below), whose sum is σ = 117165768744960. Its totient is φ = 37492647192000.

The previous prime is 76538886671957. The next prime is 76538886671987. The reversal of 76538886671986 is 68917668883567.

It is a super-2 number, since 2×76538886671986² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 76538886671897 and 76538886671906.

It is not an unprimeable number, because it can be changed into a prime (76538886671987) 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 31 ways as a sum of consecutive naturals, for example, 11270632251 + ... + 11270639041.

It is an arithmetic number, because the mean of its divisors is an integer number (1830715136640).

Almost surely, 2^{76538886671986} is an apocalyptic number.

76538886671986 is a deficient number, since it is larger than the sum of its proper divisors (40626882072974).

76538886671986 is a wasteful number, since it uses less digits than its factorization.

76538886671986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8191.

The product of its digits is 35115171840, while the sum is 88.

The spelling of 76538886671986 in words is "seventy-six trillion, five hundred thirty-eight billion, eight hundred eighty-six million, six hundred seventy-one thousand, nine hundred eighty-six".