5078517861 has 4 divisors (see below), whose sum is σ = 6771357152. Its totient is φ = 3385678572.

The previous prime is 5078517859. The next prime is 5078517907. The reversal of 5078517861 is 1687158705.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 5078517861 - 2¹ = 5078517859 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 5078517861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5078515861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 846419641 + ... + 846419646.

It is an arithmetic number, because the mean of its divisors is an integer number (1692839288).

Almost surely, 2^5078517861 is an apocalyptic number.

It is an amenable number.

5078517861 is a deficient number, since it is larger than the sum of its proper divisors (1692839291).

5078517861 is a wasteful number, since it uses less digits than its factorization.

5078517861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1692839290.

The product of its (nonzero) digits is 470400, while the sum is 48.

The square root of 5078517861 is about 71263.7205105094. The cubic root of 5078517861 is about 1718.8804076991.

The spelling of 5078517861 in words is "five billion, seventy-eight million, five hundred seventeen thousand, eight hundred sixty-one".