5642638177 has 4 divisors (see below), whose sum is σ = 6155605296. Its totient is φ = 5129671060.

The previous prime is 5642638159. The next prime is 5642638187. The reversal of 5642638177 is 7718362465.

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 5642638177 - 2⁷ = 5642638049 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5642638177.

It is not an unprimeable number, because it can be changed into a prime (5642638117) 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, 256483543 + ... + 256483564.

It is an arithmetic number, because the mean of its divisors is an integer number (1538901324).

Almost surely, 2^5642638177 is an apocalyptic number.

It is an amenable number.

5642638177 is a deficient number, since it is larger than the sum of its proper divisors (512967119).

5642638177 is a wasteful number, since it uses less digits than its factorization.

5642638177 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512967118.

The product of its digits is 1693440, while the sum is 49.

The square root of 5642638177 is about 75117.4958115618. The cubic root of 5642638177 is about 1780.3035901191.

The spelling of 5642638177 in words is "five billion, six hundred forty-two million, six hundred thirty-eight thousand, one hundred seventy-seven".