2551873849991 has 2 divisors, whose sum is σ = 2551873849992. Its totient is φ = 2551873849990.

The previous prime is 2551873849979. The next prime is 2551873850003. The reversal of 2551873849991 is 1999483781552.

It is a balanced prime because it is at equal distance from previous prime (2551873849979) and next prime (2551873850003).

It is a cyclic number.

It is not a de Polignac number, because 2551873849991 - 2¹⁸ = 2551873587847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2551873843991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1275936924995 + 1275936924996.

It is an arithmetic number, because the mean of its divisors is an integer number (1275936924996).

Almost surely, 2^{2551873849991} is an apocalyptic number.

2551873849991 is a deficient number, since it is larger than the sum of its proper divisors (1).

2551873849991 is an equidigital number, since it uses as much as digits as its factorization.

2551873849991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 195955200, while the sum is 71.

The spelling of 2551873849991 in words is "two trillion, five hundred fifty-one billion, eight hundred seventy-three million, eight hundred forty-nine thousand, nine hundred ninety-one".