53551845396 has 108 divisors (see below), whose sum is σ = 157540373172. Its totient is φ = 15293488896.

The previous prime is 53551845377. The next prime is 53551845421. The reversal of 53551845396 is 69354815535.

53551845396 is a `hidden beast` number, since 5 + 3 + 551 + 84 + 5 + 3 + 9 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 17592308496 + 35959536900 = 132636^2 + 189630^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4744816 + ... + 4756088.

It is an arithmetic number, because the mean of its divisors is an integer number (1458707159).

Almost surely, 2^53551845396 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 53551845396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78770186586).

53551845396 is an abundant number, since it is smaller than the sum of its proper divisors (103988527776).

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

53551845396 is a wasteful number, since it uses less digits than its factorization.

53551845396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13990 (or 13978 counting only the distinct ones).

The product of its digits is 9720000, while the sum is 54.

The spelling of 53551845396 in words is "fifty-three billion, five hundred fifty-one million, eight hundred forty-five thousand, three hundred ninety-six".