52145855838 has 80 divisors (see below), whose sum is σ = 118416291840. Its totient is φ = 17149824144.

The previous prime is 52145855819. The next prime is 52145855843. The reversal of 52145855838 is 83855854125.

52145855838 is a `hidden beast` number, since 5 + 2 + 1 + 4 + 58 + 5 + 583 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3663331 + ... + 3677537.

It is an arithmetic number, because the mean of its divisors is an integer number (1480203648).

Almost surely, 2^52145855838 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52145855838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59208145920).

52145855838 is an abundant number, since it is smaller than the sum of its proper divisors (66270436002).

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

52145855838 is a wasteful number, since it uses less digits than its factorization.

52145855838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14523 (or 14514 counting only the distinct ones).

The product of its digits is 7680000, while the sum is 54.

The spelling of 52145855838 in words is "fifty-two billion, one hundred forty-five million, eight hundred fifty-five thousand, eight hundred thirty-eight".