52161272000000 has 280 divisors, whose sum is σ = 130824041055840. Its totient is φ = 20776448000000.

The previous prime is 52161271999961. The next prime is 52161272000009. The reversal of 52161272000000 is 27216125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52161272000009) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 1911986360 + ... + 1912013640.

Almost surely, 2^{52161272000000} is an apocalyptic number.

52161272000000 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 52161272000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65412020527920).

52161272000000 is an abundant number, since it is smaller than the sum of its proper divisors (78662769055840).

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

52161272000000 is an frugal number, since it uses more digits than its factorization.

52161272000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27568 (or 27527 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

Adding to 52161272000000 its reverse (27216125), we get a palindrome (52161299216125).

It can be divided in two parts, 5216127 and 2000000, that added together give a palindrome (7216127).

The spelling of 52161272000000 in words is "fifty-two trillion, one hundred sixty-one billion, two hundred seventy-two million", and thus it is an aban number.