81334653175180 has 48 divisors (see below), whose sum is σ = 170920686938400. Its totient is φ = 32511403123200.

The previous prime is 81334653175147. The next prime is 81334653175189. The reversal of 81334653175180 is 8157135643318.

It is not an unprimeable number, because it can be changed into a prime (81334653175189) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 929697040 + ... + 929784520.

It is an arithmetic number, because the mean of its divisors is an integer number (3560847644550).

Almost surely, 2^{81334653175180} is an apocalyptic number.

It is an amenable number.

81334653175180 is an abundant number, since it is smaller than the sum of its proper divisors (89586033763220).

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

81334653175180 is a wasteful number, since it uses less digits than its factorization.

81334653175180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119050 (or 119048 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 55.

The spelling of 81334653175180 in words is "eighty-one trillion, three hundred thirty-four billion, six hundred fifty-three million, one hundred seventy-five thousand, one hundred eighty".