816722151 has 24 divisors (see below), whose sum is σ = 1269079920. Its totient is φ = 465841152.

The previous prime is 816722129. The next prime is 816722171. The reversal of 816722151 is 151227618.

816722151 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 816722151 - 2²² = 812527847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816722171) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80005 + ... + 89633.

It is an arithmetic number, because the mean of its divisors is an integer number (52878330).

Almost surely, 2^816722151 is an apocalyptic number.

816722151 is a deficient number, since it is larger than the sum of its proper divisors (452357769).

816722151 is a wasteful number, since it uses less digits than its factorization.

816722151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10223 (or 10216 counting only the distinct ones).

The product of its digits is 6720, while the sum is 33.

The square root of 816722151 is about 28578.3510895923. The cubic root of 816722151 is about 934.7413283506.

Adding to 816722151 its reverse (151227618), we get a palindrome (967949769).

The spelling of 816722151 in words is "eight hundred sixteen million, seven hundred twenty-two thousand, one hundred fifty-one".