2531240013644 has 12 divisors (see below), whose sum is σ = 4430162217768. Its totient is φ = 1265479380000.

The previous prime is 2531240013607. The next prime is 2531240013661. The reversal of 2531240013644 is 4463100421352.

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, 35116202 + ... + 35188209.

It is an arithmetic number, because the mean of its divisors is an integer number (369180184814).

Almost surely, 2^{2531240013644} is an apocalyptic number.

It is an amenable number.

2531240013644 is a deficient number, since it is larger than the sum of its proper divisors (1898922204124).

2531240013644 is a wasteful number, since it uses less digits than its factorization.

2531240013644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70313416 (or 70313414 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 35.

Adding to 2531240013644 its reverse (4463100421352), we get a palindrome (6994340434996).

The spelling of 2531240013644 in words is "two trillion, five hundred thirty-one billion, two hundred forty million, thirteen thousand, six hundred forty-four".