81745286801 has 8 divisors (see below), whose sum is σ = 83015470944. Its totient is φ = 80484477120.

The previous prime is 81745286789. The next prime is 81745286851. The reversal of 81745286801 is 10868254718.

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 81745286801 - 2⁶ = 81745286737 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 81745286801.

It is not an unprimeable number, because it can be changed into a prime (81745286851) 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, 2326040 + ... + 2360921.

It is an arithmetic number, because the mean of its divisors is an integer number (10376933868).

Almost surely, 2^81745286801 is an apocalyptic number.

It is an amenable number.

81745286801 is a deficient number, since it is larger than the sum of its proper divisors (1270184143).

81745286801 is a wasteful number, since it uses less digits than its factorization.

81745286801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4687231.

The product of its (nonzero) digits is 860160, while the sum is 50.

The spelling of 81745286801 in words is "eighty-one billion, seven hundred forty-five million, two hundred eighty-six thousand, eight hundred one".