812172100004 has 24 divisors (see below), whose sum is σ = 1504935357408. Its totient is φ = 382191465600.

The previous prime is 812172100001. The next prime is 812172100039. The reversal of 812172100004 is 400001271218.

It is not an unprimeable number, because it can be changed into a prime (812172100001) 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 7 ways as a sum of consecutive naturals, for example, 5875079 + ... + 6011729.

It is an arithmetic number, because the mean of its divisors is an integer number (62705639892).

Almost surely, 2^812172100004 is an apocalyptic number.

It is an amenable number.

812172100004 is a deficient number, since it is larger than the sum of its proper divisors (692763257404).

812172100004 is a wasteful number, since it uses less digits than its factorization.

812172100004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224075 (or 224073 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 26.

The spelling of 812172100004 in words is "eight hundred twelve billion, one hundred seventy-two million, one hundred thousand, four".