5187126687 has 8 divisors (see below), whose sum is σ = 6920046336. Its totient is φ = 3456145752.

The previous prime is 5187126647. The next prime is 5187126691. The reversal of 5187126687 is 7866217815.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5187126687 - 2⁸ = 5187126431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5187126647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 478423 + ... + 489144.

It is an arithmetic number, because the mean of its divisors is an integer number (865005792).

Almost surely, 2^5187126687 is an apocalyptic number.

5187126687 is a deficient number, since it is larger than the sum of its proper divisors (1732919649).

5187126687 is a wasteful number, since it uses less digits than its factorization.

5187126687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969357.

The product of its digits is 1128960, while the sum is 51.

The square root of 5187126687 is about 72021.7098311336. The cubic root of 5187126687 is about 1731.0473668281.

The spelling of 5187126687 in words is "five billion, one hundred eighty-seven million, one hundred twenty-six thousand, six hundred eighty-seven".