81018064300 has 72 divisors (see below), whose sum is σ = 176399987456. Its totient is φ = 32298557760.

The previous prime is 81018064271. The next prime is 81018064301. The reversal of 81018064300 is 346081018.

It is not an unprimeable number, because it can be changed into a prime (81018064301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62177449 + ... + 62178751.

Almost surely, 2^81018064300 is an apocalyptic number.

It is an amenable number.

81018064300 is an abundant number, since it is smaller than the sum of its proper divisors (95381923156).

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

81018064300 is a wasteful number, since it uses less digits than its factorization.

81018064300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2927 (or 2920 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The spelling of 81018064300 in words is "eighty-one billion, eighteen million, sixty-four thousand, three hundred".