5261511878 has 32 divisors (see below), whose sum is σ = 9641479680. Its totient is φ = 2104280640.

The previous prime is 5261511841. The next prime is 5261511881. The reversal of 5261511878 is 8781151625.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186068 + ... + 212471.

It is an arithmetic number, because the mean of its divisors is an integer number (301296240).

Almost surely, 2^5261511878 is an apocalyptic number.

5261511878 is a deficient number, since it is larger than the sum of its proper divisors (4379967802).

5261511878 is a wasteful number, since it uses less digits than its factorization.

5261511878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398612.

The product of its digits is 134400, while the sum is 44.

The square root of 5261511878 is about 72536.2797364188. The cubic root of 5261511878 is about 1739.2827314059.

The spelling of 5261511878 in words is "five billion, two hundred sixty-one million, five hundred eleven thousand, eight hundred seventy-eight".