12400027751591 has 2 divisors, whose sum is σ = 12400027751592. Its totient is φ = 12400027751590.

The previous prime is 12400027751497. The next prime is 12400027751597. The reversal of 12400027751591 is 19515772000421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12400027751591 - 2²² = 12400023557287 is a prime.

It is a super-3 number, since 3×12400027751591³ (a number of 40 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12400027751597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6200013875795 + 6200013875796.

It is an arithmetic number, because the mean of its divisors is an integer number (6200013875796).

Almost surely, 2^{12400027751591} is an apocalyptic number.

12400027751591 is a deficient number, since it is larger than the sum of its proper divisors (1).

12400027751591 is an equidigital number, since it uses as much as digits as its factorization.

12400027751591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 176400, while the sum is 44.

The spelling of 12400027751591 in words is "twelve trillion, four hundred billion, twenty-seven million, seven hundred fifty-one thousand, five hundred ninety-one".