82121497174 has 16 divisors (see below), whose sum is σ = 128157106176. Its totient is φ = 39423321000.

The previous prime is 82121497163. The next prime is 82121497189. The reversal of 82121497174 is 47179412128.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5206852 + ... + 5222599.

It is an arithmetic number, because the mean of its divisors is an integer number (8009819136).

Almost surely, 2^82121497174 is an apocalyptic number.

82121497174 is a deficient number, since it is larger than the sum of its proper divisors (46035609002).

82121497174 is a wasteful number, since it uses less digits than its factorization.

82121497174 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10429611.

The product of its digits is 225792, while the sum is 46.

The spelling of 82121497174 in words is "eighty-two billion, one hundred twenty-one million, four hundred ninety-seven thousand, one hundred seventy-four".