86991966951802 has 32 divisors (see below), whose sum is σ = 149673213158400. Its totient is φ = 37552419038400.

The previous prime is 86991966951779. The next prime is 86991966951823. The reversal of 86991966951802 is 20815966919968.

It is a super-2 number, since 2×86991966951802² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1117592602 + ... + 1117670437.

It is an arithmetic number, because the mean of its divisors is an integer number (4677287911200).

Almost surely, 2^{86991966951802} is an apocalyptic number.

86991966951802 is a deficient number, since it is larger than the sum of its proper divisors (62681246206598).

86991966951802 is a wasteful number, since it uses less digits than its factorization.

86991966951802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2235263142.

The product of its (nonzero) digits is 906992640, while the sum is 79.

The spelling of 86991966951802 in words is "eighty-six trillion, nine hundred ninety-one billion, nine hundred sixty-six million, nine hundred fifty-one thousand, eight hundred two".