81073740414 has 16 divisors (see below), whose sum is σ = 162599149440. Its totient is φ = 26949302040.

The previous prime is 81073740337. The next prime is 81073740421. The reversal of 81073740414 is 41404737018.

It is a congruent number.

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, 18817192 + ... + 18821499.

It is an arithmetic number, because the mean of its divisors is an integer number (10162446840).

Almost surely, 2^81073740414 is an apocalyptic number.

81073740414 is an abundant number, since it is smaller than the sum of its proper divisors (81525409026).

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

81073740414 is a wasteful number, since it uses less digits than its factorization.

81073740414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37639055.

The product of its (nonzero) digits is 75264, while the sum is 39.

The spelling of 81073740414 in words is "eighty-one billion, seventy-three million, seven hundred forty thousand, four hundred fourteen".