5145781667 has 8 divisors (see below), whose sum is σ = 5720373120. Its totient is φ = 4596727680.

The previous prime is 5145781639. The next prime is 5145781681. The reversal of 5145781667 is 7661875415.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 5145781667 - 2²⁰ = 5144733091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5145781687) 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 7 ways as a sum of consecutive naturals, for example, 6383942 + ... + 6384747.

It is an arithmetic number, because the mean of its divisors is an integer number (715046640).

Almost surely, 2^5145781667 is an apocalyptic number.

5145781667 is a deficient number, since it is larger than the sum of its proper divisors (574591453).

5145781667 is a wasteful number, since it uses less digits than its factorization.

5145781667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12768733.

The product of its digits is 1411200, while the sum is 50.

The square root of 5145781667 is about 71734.1039325090. The cubic root of 5145781667 is about 1726.4358742071.

The spelling of 5145781667 in words is "five billion, one hundred forty-five million, seven hundred eighty-one thousand, six hundred sixty-seven".