2551888388417 has 4 divisors (see below), whose sum is σ = 2558127724740. Its totient is φ = 2545649052096.

The previous prime is 2551888388351. The next prime is 2551888388429. The reversal of 2551888388417 is 7148838881552.

2551888388417 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1508219785216 + 1043668603201 = 1228096^2 + 1021601^2 .

It is a cyclic number.

It is not a de Polignac number, because 2551888388417 - 2²⁸ = 2551619952961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2551888387417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3119667548 + ... + 3119668365.

It is an arithmetic number, because the mean of its divisors is an integer number (639531931185).

Almost surely, 2^{2551888388417} is an apocalyptic number.

It is an amenable number.

2551888388417 is a deficient number, since it is larger than the sum of its proper divisors (6239336323).

2551888388417 is an equidigital number, since it uses as much as digits as its factorization.

2551888388417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6239336322.

The product of its digits is 137625600, while the sum is 68.

The spelling of 2551888388417 in words is "two trillion, five hundred fifty-one billion, eight hundred eighty-eight million, three hundred eighty-eight thousand, four hundred seventeen".