81092968123 has 8 divisors (see below), whose sum is σ = 81195940800. Its totient is φ = 80990058048.

The previous prime is 81092968109. The next prime is 81092968153. The reversal of 81092968123 is 32186929018.

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

It is a cyclic number.

It is not a de Polignac number, because 81092968123 - 2⁵ = 81092968091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81092968153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2914863 + ... + 2942551.

It is an arithmetic number, because the mean of its divisors is an integer number (10149492600).

Almost surely, 2^81092968123 is an apocalyptic number.

81092968123 is a deficient number, since it is larger than the sum of its proper divisors (102972677).

81092968123 is a wasteful number, since it uses less digits than its factorization.

81092968123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31301.

The product of its (nonzero) digits is 373248, while the sum is 49.

The spelling of 81092968123 in words is "eighty-one billion, ninety-two million, nine hundred sixty-eight thousand, one hundred twenty-three".