842915519249 has 4 divisors (see below), whose sum is σ = 842926001136. Its totient is φ = 842905037364.

The previous prime is 842915519227. The next prime is 842915519267. The reversal of 842915519249 is 942915519248.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 842915519249 - 2⁸ = 842915518993 is a prime.

It is a super-2 number, since 2×842915519249² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (842915519219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5119379 + ... + 5281464.

It is an arithmetic number, because the mean of its divisors is an integer number (210731500284).

Almost surely, 2^842915519249 is an apocalyptic number.

It is an amenable number.

842915519249 is a deficient number, since it is larger than the sum of its proper divisors (10481887).

842915519249 is a wasteful number, since it uses less digits than its factorization.

842915519249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10481886.

The product of its digits is 9331200, while the sum is 59.

Subtracting 842915519249 from its reverse (942915519248), we obtain a palindrome (99999999999).

The spelling of 842915519249 in words is "eight hundred forty-two billion, nine hundred fifteen million, five hundred nineteen thousand, two hundred forty-nine".