81153854700 has 36 divisors (see below), whose sum is σ = 234805153800. Its totient is φ = 21641027840.

The previous prime is 81153854689. The next prime is 81153854701. The reversal of 81153854700 is 745835118.

It is not an unprimeable number, because it can be changed into a prime (81153854701) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 135256125 + ... + 135256724.

Almost surely, 2^81153854700 is an apocalyptic number.

It is an amenable number.

81153854700 is an abundant number, since it is smaller than the sum of its proper divisors (153651299100).

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

81153854700 is a wasteful number, since it uses less digits than its factorization.

81153854700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270512866 (or 270512859 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 42.

The spelling of 81153854700 in words is "eighty-one billion, one hundred fifty-three million, eight hundred fifty-four thousand, seven hundred".