81592209114 has 16 divisors (see below), whose sum is σ = 175737065952. Its totient is φ = 25105295088.

The previous prime is 81592209107. The next prime is 81592209133. The reversal of 81592209114 is 41190229518.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 523026904 + ... + 523027059.

It is an arithmetic number, because the mean of its divisors is an integer number (10983566622).

Almost surely, 2^81592209114 is an apocalyptic number.

81592209114 is an abundant number, since it is smaller than the sum of its proper divisors (94144856838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

81592209114 is a wasteful number, since it uses less digits than its factorization.

81592209114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046053981.

The product of its (nonzero) digits is 51840, while the sum is 42.

The spelling of 81592209114 in words is "eighty-one billion, five hundred ninety-two million, two hundred nine thousand, one hundred fourteen".