53121454240512 has 72 divisors (see below), whose sum is σ = 161577756664576. Its totient is φ = 15177558352896.

The previous prime is 53121454240423. The next prime is 53121454240523. The reversal of 53121454240512 is 21504245412135.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4940606068 + ... + 4940616819.

Almost surely, 2^{53121454240512} is an apocalyptic number.

It is an amenable number.

53121454240512 is an abundant number, since it is smaller than the sum of its proper divisors (108456302424064).

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

53121454240512 is an equidigital number, since it uses as much as digits as its factorization.

53121454240512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9881222913 (or 9881222899 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 39.

Adding to 53121454240512 its reverse (21504245412135), we get a palindrome (74625699652647).

The spelling of 53121454240512 in words is "fifty-three trillion, one hundred twenty-one billion, four hundred fifty-four million, two hundred forty thousand, five hundred twelve".