81095424774 has 64 divisors (see below), whose sum is σ = 199655898624. Its totient is φ = 21383905536.

The previous prime is 81095424757. The next prime is 81095424797. The reversal of 81095424774 is 47742459018.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4163362 + ... + 4182794.

It is an arithmetic number, because the mean of its divisors is an integer number (3119623416).

Almost surely, 2^81095424774 is an apocalyptic number.

81095424774 is an abundant number, since it is smaller than the sum of its proper divisors (118560473850).

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

81095424774 is a wasteful number, since it uses less digits than its factorization.

81095424774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27101.

The product of its (nonzero) digits is 2257920, while the sum is 51.

The spelling of 81095424774 in words is "eighty-one billion, ninety-five million, four hundred twenty-four thousand, seven hundred seventy-four".