5261943687 has 32 divisors (see below), whose sum is σ = 9419988480. Its totient is φ = 2523208320.

The previous prime is 5261943677. The next prime is 5261943719. The reversal of 5261943687 is 7863491625.

5261943687 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5261943687 - 2⁶ = 5261943623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5261943637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 873112 + ... + 879117.

It is an arithmetic number, because the mean of its divisors is an integer number (294374640).

Almost surely, 2^5261943687 is an apocalyptic number.

5261943687 is a deficient number, since it is larger than the sum of its proper divisors (4158044793).

5261943687 is a wasteful number, since it uses less digits than its factorization.

5261943687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1752263.

The product of its digits is 2177280, while the sum is 51.

The square root of 5261943687 is about 72539.2561789821. The cubic root of 5261943687 is about 1739.3303107208.

The spelling of 5261943687 in words is "five billion, two hundred sixty-one million, nine hundred forty-three thousand, six hundred eighty-seven".