52421720268 has 48 divisors (see below), whose sum is σ = 129591481824. Its totient is φ = 16435998720.

The previous prime is 52421720257. The next prime is 52421720269. The reversal of 52421720268 is 86202712425.

52421720268 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (52421720269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 260488 + ... + 415568.

It is an arithmetic number, because the mean of its divisors is an integer number (2699822538).

Almost surely, 2^52421720268 is an apocalyptic number.

It is an amenable number.

52421720268 is an abundant number, since it is smaller than the sum of its proper divisors (77169761556).

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

52421720268 is a wasteful number, since it uses less digits than its factorization.

52421720268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156762 (or 156760 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 39.

The spelling of 52421720268 in words is "fifty-two billion, four hundred twenty-one million, seven hundred twenty thousand, two hundred sixty-eight".