53121454240515 has 32 divisors (see below), whose sum is σ = 87287648302080. Its totient is φ = 27573736917504.

The previous prime is 53121454240423. The next prime is 53121454240523. The reversal of 53121454240515 is 51504245412135.

It is not a de Polignac number, because 53121454240515 - 2⁹ = 53121454240003 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 210347494 + ... + 210599883.

It is an arithmetic number, because the mean of its divisors is an integer number (2727739009440).

Almost surely, 2^{53121454240515} is an apocalyptic number.

53121454240515 is a deficient number, since it is larger than the sum of its proper divisors (34166194061565).

53121454240515 is a wasteful number, since it uses less digits than its factorization.

53121454240515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420947611.

The product of its (nonzero) digits is 480000, while the sum is 42.

The spelling of 53121454240515 in words is "fifty-three trillion, one hundred twenty-one billion, four hundred fifty-four million, two hundred forty thousand, five hundred fifteen".