81114374256 has 20 divisors (see below), whose sum is σ = 209545466952. Its totient is φ = 27038124736.

The previous prime is 81114374251. The next prime is 81114374261. The reversal of 81114374256 is 65247341118.

It is an interprime number because it is at equal distance from previous prime (81114374251) and next prime (81114374261).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81114374251) 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, 844941351 + ... + 844941446.

Almost surely, 2^81114374256 is an apocalyptic number.

It is an amenable number.

81114374256 is an abundant number, since it is smaller than the sum of its proper divisors (128431092696).

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

81114374256 is a wasteful number, since it uses less digits than its factorization.

81114374256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1689882808 (or 1689882802 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The spelling of 81114374256 in words is "eighty-one billion, one hundred fourteen million, three hundred seventy-four thousand, two hundred fifty-six".