81473400174 has 16 divisors (see below), whose sum is σ = 162952945920. Its totient is φ = 27156775800.

The previous prime is 81473400149. The next prime is 81473400179. The reversal of 81473400174 is 47100437418.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81473400179) 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, 73734 + ... + 410345.

It is an arithmetic number, because the mean of its divisors is an integer number (10184559120).

Almost surely, 2^81473400174 is an apocalyptic number.

81473400174 is an abundant number, since it is smaller than the sum of its proper divisors (81479545746).

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

81473400174 is a wasteful number, since it uses less digits than its factorization.

81473400174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512135.

The product of its (nonzero) digits is 75264, while the sum is 39.

The spelling of 81473400174 in words is "eighty-one billion, four hundred seventy-three million, four hundred thousand, one hundred seventy-four".