52780278520 has 16 divisors (see below), whose sum is σ = 118755626760. Its totient is φ = 21112111392.

The previous prime is 52780278511. The next prime is 52780278527. The reversal of 52780278520 is 2587208725.

52780278520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52780278527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 659753442 + ... + 659753521.

Almost surely, 2^52780278520 is an apocalyptic number.

It is an amenable number.

52780278520 is an abundant number, since it is smaller than the sum of its proper divisors (65975348240).

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

52780278520 is a wasteful number, since it uses less digits than its factorization.

52780278520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319506974 (or 1319506970 counting only the distinct ones).

The product of its (nonzero) digits is 627200, while the sum is 46.

The spelling of 52780278520 in words is "fifty-two billion, seven hundred eighty million, two hundred seventy-eight thousand, five hundred twenty".