5666712137 has 4 divisors (see below), whose sum is σ = 5746525056. Its totient is φ = 5586899220.

The previous prime is 5666712127. The next prime is 5666712157. The reversal of 5666712137 is 7312176665.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7312176665 = 5 ⋅1462435333.

It is a cyclic number.

It is not a de Polignac number, because 5666712137 - 2¹⁴ = 5666695753 is a prime.

It is a super-2 number, since 2×5666712137² = 64223252887246213538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5666712127) 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, 39906353 + ... + 39906494.

It is an arithmetic number, because the mean of its divisors is an integer number (1436631264).

Almost surely, 2^5666712137 is an apocalyptic number.

It is an amenable number.

5666712137 is a deficient number, since it is larger than the sum of its proper divisors (79812919).

5666712137 is an equidigital number, since it uses as much as digits as its factorization.

5666712137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79812918.

The product of its digits is 317520, while the sum is 44.

The square root of 5666712137 is about 75277.5672893326. The cubic root of 5666712137 is about 1782.8318489734.

The spelling of 5666712137 in words is "five billion, six hundred sixty-six million, seven hundred twelve thousand, one hundred thirty-seven".