2521634122423 has 32 divisors (see below), whose sum is σ = 2853060033600. Its totient is φ = 2226362606208.

The previous prime is 2521634122421. The next prime is 2521634122471. The reversal of 2521634122423 is 3242214361252.

It is a happy number.

It is not a de Polignac number, because 2521634122423 - 2¹ = 2521634122421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521634122421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4533165 + ... + 5058937.

It is an arithmetic number, because the mean of its divisors is an integer number (89158126050).

Almost surely, 2^{2521634122423} is an apocalyptic number.

2521634122423 is a deficient number, since it is larger than the sum of its proper divisors (331425911177).

2521634122423 is an equidigital number, since it uses as much as digits as its factorization.

2521634122423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525908 (or 525882 counting only the distinct ones).

The product of its digits is 138240, while the sum is 37.

Adding to 2521634122423 its reverse (3242214361252), we get a palindrome (5763848483675).

The spelling of 2521634122423 in words is "two trillion, five hundred twenty-one billion, six hundred thirty-four million, one hundred twenty-two thousand, four hundred twenty-three".