81736741374 has 8 divisors (see below), whose sum is σ = 163473482760. Its totient is φ = 27245580456.

The previous prime is 81736741343. The next prime is 81736741379. The reversal of 81736741374 is 47314763718.

It is a sphenic number, since it is the product of 3 distinct primes.

81736741374 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81736741379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6811395109 + ... + 6811395120.

It is an arithmetic number, because the mean of its divisors is an integer number (20434185345).

Almost surely, 2^81736741374 is an apocalyptic number.

81736741374 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

81736741374 is a wasteful number, since it uses less digits than its factorization.

81736741374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13622790234.

The product of its digits is 2370816, while the sum is 51.

The spelling of 81736741374 in words is "eighty-one billion, seven hundred thirty-six million, seven hundred forty-one thousand, three hundred seventy-four".