52642643231420 has 96 divisors (see below), whose sum is σ = 121830967060992. Its totient is φ = 18947426400000.

The previous prime is 52642643231263. The next prime is 52642643231573. The reversal of 52642643231420 is 2413234624625.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72319475 + ... + 73043765.

It is an arithmetic number, because the mean of its divisors is an integer number (1269072573552).

Almost surely, 2^{52642643231420} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52642643231420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60915483530496).

52642643231420 is an abundant number, since it is smaller than the sum of its proper divisors (69188323829572).

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

52642643231420 is a wasteful number, since it uses less digits than its factorization.

52642643231420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727683 (or 727681 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 44.

The spelling of 52642643231420 in words is "fifty-two trillion, six hundred forty-two billion, six hundred forty-three million, two hundred thirty-one thousand, four hundred twenty".