53122113512 has 64 divisors (see below), whose sum is σ = 108658730880. Its totient is φ = 24200070912.

The previous prime is 53122113497. The next prime is 53122113521. The reversal of 53122113512 is 21531122135.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12488378 + ... + 12492630.

It is an arithmetic number, because the mean of its divisors is an integer number (1697792670).

Almost surely, 2^53122113512 is an apocalyptic number.

53122113512 is a gapful number since it is divisible by the number (52) 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 53122113512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54329365440).

53122113512 is an abundant number, since it is smaller than the sum of its proper divisors (55536617368).

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

53122113512 is a wasteful number, since it uses less digits than its factorization.

53122113512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5802 (or 5798 counting only the distinct ones).

The product of its digits is 1800, while the sum is 26.

Adding to 53122113512 its reverse (21531122135), we get a palindrome (74653235647).

The spelling of 53122113512 in words is "fifty-three billion, one hundred twenty-two million, one hundred thirteen thousand, five hundred twelve".