81073651001 has 8 divisors (see below), whose sum is σ = 92658761664. Its totient is φ = 69489330480.

The previous prime is 81073650991. The next prime is 81073651003. The reversal of 81073651001 is 10015637018.

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 81073651001 - 2²⁶ = 81006542137 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (81073651003) 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, 41651 + ... + 404823.

It is an arithmetic number, because the mean of its divisors is an integer number (11582345208).

Almost surely, 2^81073651001 is an apocalyptic number.

It is an amenable number.

81073651001 is a deficient number, since it is larger than the sum of its proper divisors (11585110663).

81073651001 is a wasteful number, since it uses less digits than its factorization.

81073651001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395071.

The product of its (nonzero) digits is 5040, while the sum is 32.

The spelling of 81073651001 in words is "eighty-one billion, seventy-three million, six hundred fifty-one thousand, one".