5145564638 has 4 divisors (see below), whose sum is σ = 7718346960. Its totient is φ = 2572782318.

The previous prime is 5145564563. The next prime is 5145564649. The reversal of 5145564638 is 8364655415.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 5145564592 and 5145564601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1286391158 + ... + 1286391161.

It is an arithmetic number, because the mean of its divisors is an integer number (1929586740).

Almost surely, 2^5145564638 is an apocalyptic number.

5145564638 is a deficient number, since it is larger than the sum of its proper divisors (2572782322).

5145564638 is a wasteful number, since it uses less digits than its factorization.

5145564638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2572782321.

The product of its digits is 1728000, while the sum is 47.

The square root of 5145564638 is about 71732.5911842030. The cubic root of 5145564638 is about 1726.4116024221.

The spelling of 5145564638 in words is "five billion, one hundred forty-five million, five hundred sixty-four thousand, six hundred thirty-eight".