5538685685 has 16 divisors (see below), whose sum is σ = 7168378224. Its totient is φ = 4083996672.

The previous prime is 5538685681. The next prime is 5538685693. The reversal of 5538685685 is 5865868355.

It can be written as a sum of positive squares in 8 ways, for example, as 1857351409 + 3681334276 = 43097^2 + 60674^2 .

It is a cyclic number.

It is not a de Polignac number, because 5538685685 - 2² = 5538685681 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5538685681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19562 + ... + 107051.

It is an arithmetic number, because the mean of its divisors is an integer number (448023639).

Almost surely, 2^5538685685 is an apocalyptic number.

It is an amenable number.

5538685685 is a deficient number, since it is larger than the sum of its proper divisors (1629692539).

5538685685 is a wasteful number, since it uses less digits than its factorization.

5538685685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127304.

The product of its digits is 34560000, while the sum is 59.

The square root of 5538685685 is about 74422.3466775941. The cubic root of 5538685685 is about 1769.3031064382.

The spelling of 5538685685 in words is "five billion, five hundred thirty-eight million, six hundred eighty-five thousand, six hundred eighty-five".