81696096080986 has 8 divisors (see below), whose sum is σ = 122553479435040. Its totient is φ = 40844936269308.

The previous prime is 81696096080983. The next prime is 81696096081011. The reversal of 81696096080986 is 68908069069618.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×81696096080986² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (81696096080983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1555852776 + ... + 1555905283.

It is an arithmetic number, because the mean of its divisors is an integer number (15319184929380).

Almost surely, 2^{81696096080986} is an apocalyptic number.

81696096080986 is a deficient number, since it is larger than the sum of its proper divisors (40857383354054).

81696096080986 is a wasteful number, since it uses less digits than its factorization.

81696096080986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3111771188.

The product of its (nonzero) digits is 483729408, while the sum is 76.

The spelling of 81696096080986 in words is "eighty-one trillion, six hundred ninety-six billion, ninety-six million, eighty thousand, nine hundred eighty-six".