81588860801 has 16 divisors (see below), whose sum is σ = 98812306944. Its totient is φ = 65764299264.

The previous prime is 81588860789. The next prime is 81588860827. The reversal of 81588860801 is 10806888518.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-81588860801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81588860201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145385 + ... + 429318.

It is an arithmetic number, because the mean of its divisors is an integer number (6175769184).

Almost surely, 2^81588860801 is an apocalyptic number.

It is an amenable number.

81588860801 is a deficient number, since it is larger than the sum of its proper divisors (17223446143).

81588860801 is a wasteful number, since it uses less digits than its factorization.

81588860801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575920.

The product of its (nonzero) digits is 983040, while the sum is 53.

The spelling of 81588860801 in words is "eighty-one billion, five hundred eighty-eight million, eight hundred sixty thousand, eight hundred one".