5174778861 has 48 divisors (see below), whose sum is σ = 8748964224. Its totient is φ = 2886129792.

The previous prime is 5174778859. The next prime is 5174778907. The reversal of 5174778861 is 1688774715.

5174778861 is a `hidden beast` number, since 517 + 47 + 7 + 8 + 86 + 1 = 666.

It is not a de Polignac number, because 5174778861 - 2¹ = 5174778859 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 5174778798 and 5174778807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5174778061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 653850 + ... + 661716.

It is an arithmetic number, because the mean of its divisors is an integer number (182270088).

Almost surely, 2^5174778861 is an apocalyptic number.

It is an amenable number.

5174778861 is a deficient number, since it is larger than the sum of its proper divisors (3574185363).

5174778861 is a wasteful number, since it uses less digits than its factorization.

5174778861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8130 (or 8127 counting only the distinct ones).

The product of its digits is 2634240, while the sum is 54.

The square root of 5174778861 is about 71935.9358109700. The cubic root of 5174778861 is about 1729.6727037397.

The spelling of 5174778861 in words is "five billion, one hundred seventy-four million, seven hundred seventy-eight thousand, eight hundred sixty-one".