81033606274 has 16 divisors (see below), whose sum is σ = 135474141600. Its totient is φ = 36126437184.

The previous prime is 81033606259. The next prime is 81033606287. The reversal of 81033606274 is 47260633018.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62718864 + ... + 62720155.

It is an arithmetic number, because the mean of its divisors is an integer number (8467133850).

Almost surely, 2^81033606274 is an apocalyptic number.

81033606274 is a deficient number, since it is larger than the sum of its proper divisors (54440535326).

81033606274 is a wasteful number, since it uses less digits than its factorization.

81033606274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125439057.

The product of its (nonzero) digits is 145152, while the sum is 40.

The spelling of 81033606274 in words is "eighty-one billion, thirty-three million, six hundred six thousand, two hundred seventy-four".