31425546755549 has 2 divisors, whose sum is σ = 31425546755550. Its totient is φ = 31425546755548.

The previous prime is 31425546755543. The next prime is 31425546755563. The reversal of 31425546755549 is 94555764552413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28746700944025 + 2678845811524 = 5361595^2 + 1636718^2 .

It is a cyclic number.

It is not a de Polignac number, because 31425546755549 - 2²⁴ = 31425529978333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31425546755543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15712773377774 + 15712773377775.

It is an arithmetic number, because the mean of its divisors is an integer number (15712773377775).

Almost surely, 2^{31425546755549} is an apocalyptic number.

It is an amenable number.

31425546755549 is a deficient number, since it is larger than the sum of its proper divisors (1).

31425546755549 is an equidigital number, since it uses as much as digits as its factorization.

31425546755549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600000, while the sum is 65.

The spelling of 31425546755549 in words is "thirty-one trillion, four hundred twenty-five billion, five hundred forty-six million, seven hundred fifty-five thousand, five hundred forty-nine".