81452030744 has 32 divisors (see below), whose sum is σ = 176642968320. Its totient is φ = 34487432736.

The previous prime is 81452030741. The next prime is 81452030749. The reversal of 81452030744 is 44703025418.

It is a junction number, because it is equal to n+sod(n) for n = 81452030698 and 81452030707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81452030741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8757404 + ... + 8766699.

It is an arithmetic number, because the mean of its divisors is an integer number (5520092760).

Almost surely, 2^81452030744 is an apocalyptic number.

It is an amenable number.

81452030744 is an abundant number, since it is smaller than the sum of its proper divisors (95190937576).

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

81452030744 is a wasteful number, since it uses less digits than its factorization.

81452030744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17524199 (or 17524195 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 38.

The spelling of 81452030744 in words is "eighty-one billion, four hundred fifty-two million, thirty thousand, seven hundred forty-four".