5145729878 has 16 divisors (see below), whose sum is σ = 8068381920. Its totient is φ = 2456663616.

The previous prime is 5145729857. The next prime is 5145729893. The reversal of 5145729878 is 8789275415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72125 + ... + 124472.

It is an arithmetic number, because the mean of its divisors is an integer number (504273870).

Almost surely, 2^5145729878 is an apocalyptic number.

5145729878 is a deficient number, since it is larger than the sum of its proper divisors (2922652042).

5145729878 is a wasteful number, since it uses less digits than its factorization.

5145729878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197191.

The product of its digits is 5644800, while the sum is 56.

The square root of 5145729878 is about 71733.7429526719. The cubic root of 5145729878 is about 1726.4300823635.

The spelling of 5145729878 in words is "five billion, one hundred forty-five million, seven hundred twenty-nine thousand, eight hundred seventy-eight".