2551664235316 has 24 divisors (see below), whose sum is σ = 5105499307776. Its totient is φ = 1093105207200.

The previous prime is 2551664235301. The next prime is 2551664235377. The reversal of 2551664235316 is 6135324661552.

It is a self number, because there is not a number n which added to its sum of digits gives 2551664235316.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19315471 + ... + 19447126.

It is an arithmetic number, because the mean of its divisors is an integer number (212729137824).

Almost surely, 2^{2551664235316} is an apocalyptic number.

It is an amenable number.

2551664235316 is an abundant number, since it is smaller than the sum of its proper divisors (2553835072460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2551664235316 is a wasteful number, since it uses less digits than its factorization.

2551664235316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38764959 (or 38764957 counting only the distinct ones).

The product of its digits is 3888000, while the sum is 49.

Adding to 2551664235316 its reverse (6135324661552), we get a palindrome (8686988896868).

The spelling of 2551664235316 in words is "two trillion, five hundred fifty-one billion, six hundred sixty-four million, two hundred thirty-five thousand, three hundred sixteen".