816158724505 has 32 divisors (see below), whose sum is σ = 1035177615360. Its totient is φ = 616473274560.

The previous prime is 816158724503. The next prime is 816158724547. The reversal of 816158724505 is 505427851618.

It is a happy number.

It is not a de Polignac number, because 816158724505 - 2¹ = 816158724503 is a prime.

It is a super-2 number, since 2×816158724505² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (816158724503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44243814 + ... + 44262256.

It is an arithmetic number, because the mean of its divisors is an integer number (32349300480).

Almost surely, 2^816158724505 is an apocalyptic number.

It is an amenable number.

816158724505 is a deficient number, since it is larger than the sum of its proper divisors (219018890855).

816158724505 is a wasteful number, since it uses less digits than its factorization.

816158724505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23421.

The product of its (nonzero) digits is 2688000, while the sum is 52.

The spelling of 816158724505 in words is "eight hundred sixteen billion, one hundred fifty-eight million, seven hundred twenty-four thousand, five hundred five".