81074291801 has 8 divisors (see below), whose sum is σ = 83577867360. Its totient is φ = 78608364192.

The previous prime is 81074291773. The next prime is 81074291833. The reversal of 81074291801 is 10819247018.

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 81074291801 - 2¹⁰ = 81074290777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81074291101) 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, 9407615 + ... + 9416228.

It is an arithmetic number, because the mean of its divisors is an integer number (10447233420).

Almost surely, 2^81074291801 is an apocalyptic number.

It is an amenable number.

81074291801 is a deficient number, since it is larger than the sum of its proper divisors (2503575559).

81074291801 is a wasteful number, since it uses less digits than its factorization.

81074291801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18823975.

The product of its (nonzero) digits is 32256, while the sum is 41.

The spelling of 81074291801 in words is "eighty-one billion, seventy-four million, two hundred ninety-one thousand, eight hundred one".