5166310781 has 8 divisors (see below), whose sum is σ = 5233236480. Its totient is φ = 5099423472.

The previous prime is 5166310741. The next prime is 5166310783. The reversal of 5166310781 is 1870136615.

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 5166310781 - 2³⁰ = 4092568957 is a prime.

It is a super-2 number, since 2×5166310781² = 53381534171753659922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5166310783) 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, 345251 + ... + 359903.

It is an arithmetic number, because the mean of its divisors is an integer number (654154560).

Almost surely, 2^5166310781 is an apocalyptic number.

It is an amenable number.

5166310781 is a deficient number, since it is larger than the sum of its proper divisors (66925699).

5166310781 is a wasteful number, since it uses less digits than its factorization.

5166310781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19195.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 5166310781 is about 71877.0532298035. The cubic root of 5166310781 is about 1728.7287018145.

The spelling of 5166310781 in words is "five billion, one hundred sixty-six million, three hundred ten thousand, seven hundred eighty-one".