615504325454453 has 4 divisors (see below), whose sum is σ = 615510351110700. Its totient is φ = 615498299798208.

The previous prime is 615504325454423. The next prime is 615504325454461. The reversal of 615504325454453 is 354454523405516.

615504325454453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 264876341100484 + 350627984353969 = 16275022^2 + 18725063^2 .

It is a cyclic number.

It is not a de Polignac number, because 615504325454453 - 2³⁴ = 615487145585269 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 (615504325454423) 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, 3012674900 + ... + 3012879197.

It is an arithmetic number, because the mean of its divisors is an integer number (153877587777675).

Almost surely, 2^{615504325454453} is an apocalyptic number.

It is an amenable number.

615504325454453 is a deficient number, since it is larger than the sum of its proper divisors (6025656247).

615504325454453 is a wasteful number, since it uses less digits than its factorization.

615504325454453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6025656246.

The product of its (nonzero) digits is 86400000, while the sum is 56.

Adding to 615504325454453 its reverse (354454523405516), we get a palindrome (969958848859969).

The spelling of 615504325454453 in words is "six hundred fifteen trillion, five hundred four billion, three hundred twenty-five million, four hundred fifty-four thousand, four hundred fifty-three".