5638777452 has 72 divisors (see below), whose sum is σ = 17770701312. Its totient is φ = 1464616800.

The previous prime is 5638777439. The next prime is 5638777453. The reversal of 5638777452 is 2547778365.

It is a happy number.

5638777452 is a `hidden beast` number, since 563 + 8 + 7 + 7 + 74 + 5 + 2 = 666.

It is a super-2 number, since 2×5638777452² = 63591622306367224608, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5638777453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1014324 + ... + 1019867.

It is an arithmetic number, because the mean of its divisors is an integer number (246815296).

Almost surely, 2^5638777452 is an apocalyptic number.

It is an amenable number.

5638777452 is an abundant number, since it is smaller than the sum of its proper divisors (12131923860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5638777452 is a wasteful number, since it uses less digits than its factorization.

5638777452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2034219 (or 2034214 counting only the distinct ones).

The product of its digits is 9878400, while the sum is 54.

The square root of 5638777452 is about 75091.7935063479. The cubic root of 5638777452 is about 1779.8974662144.

The spelling of 5638777452 in words is "five billion, six hundred thirty-eight million, seven hundred seventy-seven thousand, four hundred fifty-two".