81046584324 has 18 divisors (see below), whose sum is σ = 204867754910. Its totient is φ = 27015528096.

The previous prime is 81046584323. The next prime is 81046584337. The reversal of 81046584324 is 42348564018.

81046584324 is a `hidden beast` number, since 8 + 1 + 0 + 46 + 584 + 3 + 24 = 666.

It can be written as a sum of positive squares in only one way, i.e., 61956188100 + 19090396224 = 248910^2 + 138168^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 81046584324.

It is not an unprimeable number, because it can be changed into a prime (81046584323) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1125646969 + ... + 1125647040.

Almost surely, 2^81046584324 is an apocalyptic number.

It is an amenable number.

81046584324 is an abundant number, since it is smaller than the sum of its proper divisors (123821170586).

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

81046584324 is a wasteful number, since it uses less digits than its factorization.

81046584324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2251294019 (or 2251294014 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 45.

The spelling of 81046584324 in words is "eighty-one billion, forty-six million, five hundred eighty-four thousand, three hundred twenty-four".