2551640038013 has 8 divisors (see below), whose sum is σ = 2809622337120. Its totient is φ = 2297993576080.

The previous prime is 2551640037967. The next prime is 2551640038019. The reversal of 2551640038013 is 3108300461552.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2551640038013 - 2¹⁸ = 2551639775869 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 (2551640038019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1083958058 + ... + 1083960411.

It is an arithmetic number, because the mean of its divisors is an integer number (351202792140).

Almost surely, 2^{2551640038013} is an apocalyptic number.

It is an amenable number.

2551640038013 is a deficient number, since it is larger than the sum of its proper divisors (257982299107).

2551640038013 is a wasteful number, since it uses less digits than its factorization.

2551640038013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2167918587.

The product of its (nonzero) digits is 86400, while the sum is 38.

Adding to 2551640038013 its reverse (3108300461552), we get a palindrome (5659940499565).

The spelling of 2551640038013 in words is "two trillion, five hundred fifty-one billion, six hundred forty million, thirty-eight thousand, thirteen".