5243685657 has 12 divisors (see below), whose sum is σ = 8133063696. Its totient is φ = 2996391720.

The previous prime is 5243685647. The next prime is 5243685673. The reversal of 5243685657 is 7565863425.

It is not a de Polignac number, because 5243685657 - 2⁴ = 5243685641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5243685647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17835519 + ... + 17835812.

It is an arithmetic number, because the mean of its divisors is an integer number (677755308).

Almost surely, 2^5243685657 is an apocalyptic number.

It is an amenable number.

5243685657 is a deficient number, since it is larger than the sum of its proper divisors (2889378039).

5243685657 is a wasteful number, since it uses less digits than its factorization.

5243685657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35671348 (or 35671341 counting only the distinct ones).

The product of its digits is 6048000, while the sum is 51.

The square root of 5243685657 is about 72413.2975150283. The cubic root of 5243685657 is about 1737.3162548269.

It can be divided in two parts, 5243 and 685657, that added together give a triangular number (690900 = T₁₁₇₅).

The spelling of 5243685657 in words is "five billion, two hundred forty-three million, six hundred eighty-five thousand, six hundred fifty-seven".