20527144878 has 32 divisors (see below), whose sum is σ = 42491037600. Its totient is φ = 6603158016.

The previous prime is 20527144843. The next prime is 20527144919. The reversal of 20527144878 is 87844172502.

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, 335250 + ... + 391722.

It is an arithmetic number, because the mean of its divisors is an integer number (1327844925).

Almost surely, 2^20527144878 is an apocalyptic number.

20527144878 is an abundant number, since it is smaller than the sum of its proper divisors (21963892722).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20527144878 is a wasteful number, since it uses less digits than its factorization.

20527144878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58596.

The product of its (nonzero) digits is 1003520, while the sum is 48.

The spelling of 20527144878 in words is "twenty billion, five hundred twenty-seven million, one hundred forty-four thousand, eight hundred seventy-eight".