2551666950775 has 6 divisors (see below), whose sum is σ = 3164067018992. Its totient is φ = 2041333560600.

The previous prime is 2551666950769. The next prime is 2551666950779. The reversal of 2551666950775 is 5770596661552.

It is a happy number.

2551666950775 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2551666950775 - 2⁹ = 2551666950263 is a prime.

It is a super-2 number, since 2×2551666950775² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551666950779) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51033338991 + ... + 51033339040.

Almost surely, 2^{2551666950775} is an apocalyptic number.

2551666950775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2551666950775 is a deficient number, since it is larger than the sum of its proper divisors (612400068217).

2551666950775 is a wasteful number, since it uses less digits than its factorization.

2551666950775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102066678041 (or 102066678036 counting only the distinct ones).

The product of its (nonzero) digits is 119070000, while the sum is 64.

The spelling of 2551666950775 in words is "two trillion, five hundred fifty-one billion, six hundred sixty-six million, nine hundred fifty thousand, seven hundred seventy-five".