5000000078 has 4 divisors (see below), whose sum is σ = 7500000120. Its totient is φ = 2500000038.

The previous prime is 5000000063. The next prime is 5000000099. The reversal of 5000000078 is 8700000005.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8700000005 = 5 ⋅1740000001.

It is a junction number, because it is equal to n+sod(n) for n = 4999999996 and 5000000059.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1250000018 + ... + 1250000021.

It is an arithmetic number, because the mean of its divisors is an integer number (1875000030).

Almost surely, 2^5000000078 is an apocalyptic number.

5000000078 is a deficient number, since it is larger than the sum of its proper divisors (2500000042).

5000000078 is a wasteful number, since it uses less digits than its factorization.

5000000078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2500000041.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 5000000078 is about 70710.6786701980. The cubic root of 5000000078 is about 1709.9759555686.

The spelling of 5000000078 in words is "five billion, seventy-eight", and thus it is an aban number and an uban number.