812177417946 has 16 divisors (see below), whose sum is σ = 1635256548000. Its totient is φ = 268908853968.

The previous prime is 812177417939. The next prime is 812177417963. The reversal of 812177417946 is 649714771218.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 454237036 + ... + 454238823.

It is an arithmetic number, because the mean of its divisors is an integer number (102203534250).

Almost surely, 2^812177417946 is an apocalyptic number.

812177417946 is an abundant number, since it is smaller than the sum of its proper divisors (823079130054).

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

812177417946 is a wasteful number, since it uses less digits than its factorization.

812177417946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908476013.

The product of its digits is 4741632, while the sum is 57.

The spelling of 812177417946 in words is "eight hundred twelve billion, one hundred seventy-seven million, four hundred seventeen thousand, nine hundred forty-six".