51432045521453 has 4 divisors (see below), whose sum is σ = 54138995285760. Its totient is φ = 48725095757148.

The previous prime is 51432045521419. The next prime is 51432045521471. The reversal of 51432045521453 is 35412554023415.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51432045521453 - 2²⁰ = 51432044472877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51432045521053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1353474882125 + ... + 1353474882162.

It is an arithmetic number, because the mean of its divisors is an integer number (13534748821440).

Almost surely, 2^{51432045521453} is an apocalyptic number.

It is an amenable number.

51432045521453 is a deficient number, since it is larger than the sum of its proper divisors (2706949764307).

51432045521453 is a wasteful number, since it uses less digits than its factorization.

51432045521453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2706949764306.

The product of its (nonzero) digits is 1440000, while the sum is 44.

Adding to 51432045521453 its reverse (35412554023415), we get a palindrome (86844599544868).

The spelling of 51432045521453 in words is "fifty-one trillion, four hundred thirty-two billion, forty-five million, five hundred twenty-one thousand, four hundred fifty-three".