2523420243513 has 32 divisors (see below), whose sum is σ = 4201011790080. Its totient is φ = 1485357730560.

The previous prime is 2523420243493. The next prime is 2523420243529. The reversal of 2523420243513 is 3153420243252.

2523420243513 is a `hidden beast` number, since 2 + 5 + 2 + 3 + 4 + 202 + 435 + 13 = 666.

It is not a de Polignac number, because 2523420243513 - 2⁵ = 2523420243481 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2523420243593) 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, 156279568 + ... + 156295713.

It is an arithmetic number, because the mean of its divisors is an integer number (131281618440).

Almost surely, 2^{2523420243513} is an apocalyptic number.

2523420243513 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2523420243513 is a deficient number, since it is larger than the sum of its proper divisors (1677591546567).

2523420243513 is a wasteful number, since it uses less digits than its factorization.

2523420243513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312575326 (or 312575320 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

Adding to 2523420243513 its reverse (3153420243252), we get a palindrome (5676840486765).

The spelling of 2523420243513 in words is "two trillion, five hundred twenty-three billion, four hundred twenty million, two hundred forty-three thousand, five hundred thirteen".