2539454565629 has 4 divisors (see below), whose sum is σ = 2539457904060. Its totient is φ = 2539451227200.

The previous prime is 2539454565551. The next prime is 2539454565643. The reversal of 2539454565629 is 9265654549352.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 452807868100 + 2086646697529 = 672910^2 + 1444523^2 .

It is a cyclic number.

It is not a de Polignac number, because 2539454565629 - 2¹² = 2539454561533 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2539454565649) 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, 89387 + ... + 2255415.

It is an arithmetic number, because the mean of its divisors is an integer number (634864476015).

Almost surely, 2^{2539454565629} is an apocalyptic number.

It is an amenable number.

2539454565629 is a deficient number, since it is larger than the sum of its proper divisors (3338431).

2539454565629 is a wasteful number, since it uses less digits than its factorization.

2539454565629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3338430.

The product of its digits is 349920000, while the sum is 65.

The spelling of 2539454565629 in words is "two trillion, five hundred thirty-nine billion, four hundred fifty-four million, five hundred sixty-five thousand, six hundred twenty-nine".