5191397567 has 4 divisors (see below), whose sum is σ = 5193810960. Its totient is φ = 5188984176.

The previous prime is 5191397543. The next prime is 5191397579. The reversal of 5191397567 is 7657931915.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5191397567 - 2⁸ = 5191397311 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 (5191397527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1203467 + ... + 1207772.

It is an arithmetic number, because the mean of its divisors is an integer number (1298452740).

Almost surely, 2^5191397567 is an apocalyptic number.

5191397567 is a deficient number, since it is larger than the sum of its proper divisors (2413393).

5191397567 is a wasteful number, since it uses less digits than its factorization.

5191397567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2413392.

The product of its digits is 1786050, while the sum is 53.

The square root of 5191397567 is about 72051.3536791641. The cubic root of 5191397567 is about 1731.5223290366.

The spelling of 5191397567 in words is "five billion, one hundred ninety-one million, three hundred ninety-seven thousand, five hundred sixty-seven".