81017036974 has 8 divisors (see below), whose sum is σ = 121568040648. Its totient is φ = 40494356760.

The previous prime is 81017036929. The next prime is 81017037007. The reversal of 81017036974 is 47963071018.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7073712 + ... + 7085155.

It is an arithmetic number, because the mean of its divisors is an integer number (15196005081).

Almost surely, 2^81017036974 is an apocalyptic number.

81017036974 is a deficient number, since it is larger than the sum of its proper divisors (40551003674).

81017036974 is a wasteful number, since it uses less digits than its factorization.

81017036974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14161730.

The product of its (nonzero) digits is 254016, while the sum is 46.

The spelling of 81017036974 in words is "eighty-one billion, seventeen million, thirty-six thousand, nine hundred seventy-four".