81077140570092 has 96 divisors (see below), whose sum is σ = 192053139812352. Its totient is φ = 26618179239936.

The previous prime is 81077140570087. The next prime is 81077140570211. The reversal of 81077140570092 is 29007504177018.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1034543493 + ... + 1034621859.

It is an arithmetic number, because the mean of its divisors is an integer number (2000553539712).

Almost surely, 2^{81077140570092} is an apocalyptic number.

It is an amenable number.

81077140570092 is an abundant number, since it is smaller than the sum of its proper divisors (110975999242260).

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

81077140570092 is a wasteful number, since it uses less digits than its factorization.

81077140570092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83007 (or 83005 counting only the distinct ones).

The product of its (nonzero) digits is 987840, while the sum is 51.

The spelling of 81077140570092 in words is "eighty-one trillion, seventy-seven billion, one hundred forty million, five hundred seventy thousand, ninety-two".