81055302256 has 20 divisors (see below), whose sum is σ = 157160079504. Its totient is φ = 40497862400.

The previous prime is 81055302227. The next prime is 81055302257. The reversal of 81055302256 is 65220355018.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81055302257) 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, 1839340 + ... + 1882891.

Almost surely, 2^81055302256 is an apocalyptic number.

It is an amenable number.

81055302256 is a deficient number, since it is larger than the sum of its proper divisors (76104777248).

81055302256 is a wasteful number, since it uses less digits than its factorization.

81055302256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3723600 (or 3723594 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 37.

The spelling of 81055302256 in words is "eighty-one billion, fifty-five million, three hundred two thousand, two hundred fifty-six".