816156417004 has 24 divisors (see below), whose sum is σ = 1443390058656. Its totient is φ = 403764720000.

The previous prime is 816156416981. The next prime is 816156417031. The reversal of 816156417004 is 400714651618.

It is a super-2 number, since 2×816156417004² (a number of 25 digits) contains 22 as substring.

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, 83712 + ... + 1280359.

It is an arithmetic number, because the mean of its divisors is an integer number (60141252444).

Almost surely, 2^816156417004 is an apocalyptic number.

It is an amenable number.

816156417004 is a deficient number, since it is larger than the sum of its proper divisors (627233641652).

816156417004 is a wasteful number, since it uses less digits than its factorization.

816156417004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1365657 (or 1365655 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 43.

The spelling of 816156417004 in words is "eight hundred sixteen billion, one hundred fifty-six million, four hundred seventeen thousand, four".