5651638445 has 16 divisors (see below), whose sum is σ = 7331859840. Its totient is φ = 4167578304.

The previous prime is 5651638417. The next prime is 5651638459. The reversal of 5651638445 is 5448361565.

It is a cyclic number.

It is not a de Polignac number, because 5651638445 - 2⁶ = 5651638381 is a prime.

It is a super-2 number, since 2×5651638445² = 63882034226004036050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 5651638445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 800417 + ... + 807446.

It is an arithmetic number, because the mean of its divisors is an integer number (458241240).

Almost surely, 2^5651638445 is an apocalyptic number.

It is an amenable number.

5651638445 is a deficient number, since it is larger than the sum of its proper divisors (1680221395).

5651638445 is a wasteful number, since it uses less digits than its factorization.

5651638445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1607924.

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

The square root of 5651638445 is about 75177.3798758643. The cubic root of 5651638445 is about 1781.2496427290.

The spelling of 5651638445 in words is "five billion, six hundred fifty-one million, six hundred thirty-eight thousand, four hundred forty-five".