5165691951 has 8 divisors (see below), whose sum is σ = 7871530624. Its totient is φ = 2951823960.

The previous prime is 5165691941. The next prime is 5165691983. The reversal of 5165691951 is 1591965615.

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

It is not a de Polignac number, because 5165691951 - 2¹⁹ = 5165167663 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5165691951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5165691911) 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, 122992645 + ... + 122992686.

It is an arithmetic number, because the mean of its divisors is an integer number (983941328).

Almost surely, 2^5165691951 is an apocalyptic number.

5165691951 is a deficient number, since it is larger than the sum of its proper divisors (2705838673).

5165691951 is a wasteful number, since it uses less digits than its factorization.

5165691951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245985341.

The product of its digits is 364500, while the sum is 48.

The square root of 5165691951 is about 71872.7483195126. The cubic root of 5165691951 is about 1728.6596756470.

The spelling of 5165691951 in words is "five billion, one hundred sixty-five million, six hundred ninety-one thousand, nine hundred fifty-one".