81007100373 has 8 divisors (see below), whose sum is σ = 108014935168. Its totient is φ = 54001999584.

The previous prime is 81007100347. The next prime is 81007100387. The reversal of 81007100373 is 37300170018.

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

It is not a de Polignac number, because 81007100373 - 2⁵ = 81007100341 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 81007100373.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81007100173) 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, 613336 + ... + 733617.

It is an arithmetic number, because the mean of its divisors is an integer number (13501866896).

Almost surely, 2^81007100373 is an apocalyptic number.

It is an amenable number.

81007100373 is a deficient number, since it is larger than the sum of its proper divisors (27007834795).

81007100373 is a wasteful number, since it uses less digits than its factorization.

81007100373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1367003.

The product of its (nonzero) digits is 3528, while the sum is 30.

The spelling of 81007100373 in words is "eighty-one billion, seven million, one hundred thousand, three hundred seventy-three".