81588572711 has 8 divisors (see below), whose sum is σ = 85009184400. Its totient is φ = 78208441920.

The previous prime is 81588572701. The next prime is 81588572729. The reversal of 81588572711 is 11727588518.

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 81588572711 - 2⁶ = 81588572647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81588572701) 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, 10116110 + ... + 10124171.

It is an arithmetic number, because the mean of its divisors is an integer number (10626148050).

Almost surely, 2^81588572711 is an apocalyptic number.

81588572711 is a deficient number, since it is larger than the sum of its proper divisors (3420611689).

81588572711 is a wasteful number, since it uses less digits than its factorization.

81588572711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20240449.

The product of its digits is 1254400, while the sum is 53.

The spelling of 81588572711 in words is "eighty-one billion, five hundred eighty-eight million, five hundred seventy-two thousand, seven hundred eleven".