7917845782 has 48 divisors (see below), whose sum is σ = 14933963520. Its totient is φ = 3081901680.

The previous prime is 7917845779. The next prime is 7917845797. The reversal of 7917845782 is 2875487197.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2741143 + ... + 2744029.

It is an arithmetic number, because the mean of its divisors is an integer number (311124240).

Almost surely, 2^7917845782 is an apocalyptic number.

7917845782 is a deficient number, since it is larger than the sum of its proper divisors (7016117738).

7917845782 is a wasteful number, since it uses less digits than its factorization.

7917845782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4537 (or 4526 counting only the distinct ones).

The product of its digits is 7902720, while the sum is 58.

The square root of 7917845782 is about 88982.2779097051. The cubic root of 7917845782 is about 1993.1302454200.

The spelling of 7917845782 in words is "seven billion, nine hundred seventeen million, eight hundred forty-five thousand, seven hundred eighty-two".