53451126451565 has 4 divisors (see below), whose sum is σ = 64141351741884. Its totient is φ = 42760901161248.

The previous prime is 53451126451537. The next prime is 53451126451579. The reversal of 53451126451565 is 56515462115435.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33123409026436 + 20327717425129 = 5755294^2 + 4508627^2 .

It is a cyclic number.

It is not a de Polignac number, because 53451126451565 - 2¹² = 53451126447469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5345112645152 + ... + 5345112645161.

It is an arithmetic number, because the mean of its divisors is an integer number (16035337935471).

Almost surely, 2^{53451126451565} is an apocalyptic number.

It is an amenable number.

53451126451565 is a deficient number, since it is larger than the sum of its proper divisors (10690225290319).

53451126451565 is a wasteful number, since it uses less digits than its factorization.

53451126451565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10690225290318.

The product of its digits is 10800000, while the sum is 53.

The spelling of 53451126451565 in words is "fifty-three trillion, four hundred fifty-one billion, one hundred twenty-six million, four hundred fifty-one thousand, five hundred sixty-five".