81032373296642 has 32 divisors (see below), whose sum is σ = 122006357343360. Its totient is φ = 40363960412160.

The previous prime is 81032373296617. The next prime is 81032373296681. The reversal of 81032373296642 is 24669237323018.

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, 1128407234 + ... + 1128479042.

It is an arithmetic number, because the mean of its divisors is an integer number (3812698666980).

Almost surely, 2^{81032373296642} is an apocalyptic number.

81032373296642 is a deficient number, since it is larger than the sum of its proper divisors (40973984046718).

81032373296642 is a wasteful number, since it uses less digits than its factorization.

81032373296642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74378.

The product of its (nonzero) digits is 15676416, while the sum is 56.

The spelling of 81032373296642 in words is "eighty-one trillion, thirty-two billion, three hundred seventy-three million, two hundred ninety-six thousand, six hundred forty-two".