81036743334 has 32 divisors (see below), whose sum is σ = 164800228320. Its totient is φ = 26561145600.

The previous prime is 81036743323. The next prime is 81036743351. The reversal of 81036743334 is 43334763018.

It is a Curzon 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, 322557 + ... + 515864.

It is an arithmetic number, because the mean of its divisors is an integer number (5150007135).

Almost surely, 2^81036743334 is an apocalyptic number.

81036743334 is an abundant number, since it is smaller than the sum of its proper divisors (83763484986).

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

81036743334 is a wasteful number, since it uses less digits than its factorization.

81036743334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838696.

The product of its (nonzero) digits is 435456, while the sum is 42.

The spelling of 81036743334 in words is "eighty-one billion, thirty-six million, seven hundred forty-three thousand, three hundred thirty-four".