5170660781 has 16 divisors (see below), whose sum is σ = 6076824768. Its totient is φ = 4337443200.

The previous prime is 5170660771. The next prime is 5170660801. The reversal of 5170660781 is 1870660715.

It is a cyclic number.

It is not a de Polignac number, because 5170660781 - 2¹⁸ = 5170398637 is a prime.

It is a super-2 number, since 2×5170660781² = 53471465824343059922, 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 (5170660771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 559841 + ... + 569001.

It is an arithmetic number, because the mean of its divisors is an integer number (379801548).

Almost surely, 2^5170660781 is an apocalyptic number.

It is an amenable number.

5170660781 is a deficient number, since it is larger than the sum of its proper divisors (906163987).

5170660781 is a wasteful number, since it uses less digits than its factorization.

5170660781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13132.

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 5170660781 is about 71907.3068679394. The cubic root of 5170660781 is about 1729.2137584677.

The spelling of 5170660781 in words is "five billion, one hundred seventy million, six hundred sixty thousand, seven hundred eighty-one".