86985974361212 has 12 divisors (see below), whose sum is σ = 154720954397016. Its totient is φ = 42779987390640.

The previous prime is 86985974361107. The next prime is 86985974361239. The reversal of 86985974361212 is 21216347958968.

It is a super-2 number, since 2×86985974361212² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178249947218 + ... + 178249947705.

It is an arithmetic number, because the mean of its divisors is an integer number (12893412866418).

Almost surely, 2^{86985974361212} is an apocalyptic number.

It is an amenable number.

86985974361212 is a deficient number, since it is larger than the sum of its proper divisors (67734980035804).

86985974361212 is a wasteful number, since it uses less digits than its factorization.

86985974361212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356499894988 (or 356499894986 counting only the distinct ones).

The product of its digits is 313528320, while the sum is 71.

The spelling of 86985974361212 in words is "eighty-six trillion, nine hundred eighty-five billion, nine hundred seventy-four million, three hundred sixty-one thousand, two hundred twelve".