817157364814 has 64 divisors (see below), whose sum is σ = 1520416972800. Its totient is φ = 321861859200.

The previous prime is 817157364773. The next prime is 817157364851. The reversal of 817157364814 is 418463751718.

It is a happy number.

It is a congruent 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 31 ways as a sum of consecutive naturals, for example, 235567 + ... + 1299925.

It is an arithmetic number, because the mean of its divisors is an integer number (23756515200).

Almost surely, 2^817157364814 is an apocalyptic number.

817157364814 is a deficient number, since it is larger than the sum of its proper divisors (703259607986).

817157364814 is a wasteful number, since it uses less digits than its factorization.

817157364814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064489.

The product of its digits is 4515840, while the sum is 55.

The spelling of 817157364814 in words is "eight hundred seventeen billion, one hundred fifty-seven million, three hundred sixty-four thousand, eight hundred fourteen".