53000000000000 has 338 divisors, whose sum is σ = 134983520397234. Its totient is φ = 20800000000000.

The previous prime is 52999999999939. The next prime is 53000000000029. The reversal of 53000000000000 is 35.

It can be written as a sum of positive squares in 13 ways, for example, as 43338943565824 + 9661056434176 = 6583232^2 + 3108224^2 .

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 25 ways as a sum of consecutive naturals, for example, 999999999974 + ... + 1000000000026.

Almost surely, 2^{53000000000000} is an apocalyptic number.

53000000000000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53000000000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67491760198617).

53000000000000 is an abundant number, since it is smaller than the sum of its proper divisors (81983520397234).

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

53000000000000 is an frugal number, since it uses more digits than its factorization.

53000000000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137 (or 60 counting only the distinct ones).

The product of its (nonzero) digits is 15, while the sum is 8.

Adding to 53000000000000 its reverse (35), we get a palindrome (53000000000035).

The spelling of 53000000000000 in words is "fifty-three trillion", and thus it is an aban number and an uban number.