52090781878 has 4 divisors (see below), whose sum is σ = 78136172820. Its totient is φ = 26045390938.

The previous prime is 52090781857. The next prime is 52090781891. The reversal of 52090781878 is 87818709025.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×52090781878² (a number of 22 digits) contains 22 as substring.

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, 13022695468 + ... + 13022695471.

It is an arithmetic number, because the mean of its divisors is an integer number (19534043205).

Almost surely, 2^52090781878 is an apocalyptic number.

52090781878 is a deficient number, since it is larger than the sum of its proper divisors (26045390942).

52090781878 is a wasteful number, since it uses less digits than its factorization.

52090781878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26045390941.

The product of its (nonzero) digits is 2257920, while the sum is 55.

The spelling of 52090781878 in words is "fifty-two billion, ninety million, seven hundred eighty-one thousand, eight hundred seventy-eight".