81595658095 has 16 divisors (see below), whose sum is σ = 112051657728. Its totient is φ = 55876788000.

The previous prime is 81595658087. The next prime is 81595658101. The reversal of 81595658095 is 59085659518.

It is not a de Polignac number, because 81595658095 - 2³ = 81595658087 is a prime.

It is a super-2 number, since 2×81595658095² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1525849 + ... + 1578418.

It is an arithmetic number, because the mean of its divisors is an integer number (7003228608).

Almost surely, 2^81595658095 is an apocalyptic number.

81595658095 is a deficient number, since it is larger than the sum of its proper divisors (30455999633).

81595658095 is a wasteful number, since it uses less digits than its factorization.

81595658095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3105030.

The product of its (nonzero) digits is 19440000, while the sum is 61.

The spelling of 81595658095 in words is "eighty-one billion, five hundred ninety-five million, six hundred fifty-eight thousand, ninety-five".