842615516247 has 32 divisors (see below), whose sum is σ = 1169191296000. Its totient is φ = 539304075648.

The previous prime is 842615516243. The next prime is 842615516261. The reversal of 842615516247 is 742615516248.

It is not a de Polignac number, because 842615516247 - 2² = 842615516243 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 842615516247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842615516243) 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, 14325504 + ... + 14384202.

It is an arithmetic number, because the mean of its divisors is an integer number (36537228000).

Almost surely, 2^842615516247 is an apocalyptic number.

842615516247 is a deficient number, since it is larger than the sum of its proper divisors (326575779753).

842615516247 is a wasteful number, since it uses less digits than its factorization.

842615516247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60455.

The product of its digits is 3225600, while the sum is 51.

Subtracting from 842615516247 its reverse (742615516248), we obtain a palindrome (99999999999).

The spelling of 842615516247 in words is "eight hundred forty-two billion, six hundred fifteen million, five hundred sixteen thousand, two hundred forty-seven".