5063691991 has 4 divisors (see below), whose sum is σ = 5069952000. Its totient is φ = 5057431984.

The previous prime is 5063691989. The next prime is 5063692043. The reversal of 5063691991 is 1991963605.

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 5063691991 - 2¹ = 5063691989 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 (5063691091) 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, 3128791 + ... + 3130408.

It is an arithmetic number, because the mean of its divisors is an integer number (1267488000).

Almost surely, 2^5063691991 is an apocalyptic number.

5063691991 is a deficient number, since it is larger than the sum of its proper divisors (6260009).

5063691991 is an equidigital number, since it uses as much as digits as its factorization.

5063691991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6260008.

The product of its (nonzero) digits is 393660, while the sum is 49.

The square root of 5063691991 is about 71159.6233196888. The cubic root of 5063691991 is about 1717.2061176075.

The spelling of 5063691991 in words is "five billion, sixty-three million, six hundred ninety-one thousand, nine hundred ninety-one".