53989237836 has 144 divisors (see below), whose sum is σ = 141061100544. Its totient is φ = 17401989888.

The previous prime is 53989237829. The next prime is 53989237847. The reversal of 53989237836 is 63873298935.

53989237836 is a `hidden beast` number, since 5 + 398 + 9 + 237 + 8 + 3 + 6 = 666.

It is a super-2 number, since 2×53989237836² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 65600121 + ... + 65600943.

It is an arithmetic number, because the mean of its divisors is an integer number (979590976).

Almost surely, 2^53989237836 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 53989237836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70530550272).

53989237836 is an abundant number, since it is smaller than the sum of its proper divisors (87071862708).

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

53989237836 is a wasteful number, since it uses less digits than its factorization.

53989237836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300 (or 1295 counting only the distinct ones).

The product of its digits is 58786560, while the sum is 63.

The spelling of 53989237836 in words is "fifty-three billion, nine hundred eighty-nine million, two hundred thirty-seven thousand, eight hundred thirty-six".