2427505206557 has 2 divisors, whose sum is σ = 2427505206558. Its totient is φ = 2427505206556.

The previous prime is 2427505206551. The next prime is 2427505206569. The reversal of 2427505206557 is 7556025057242.

It is a happy number.

2427505206557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2248998111556 + 178507095001 = 1499666^2 + 422501^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2427505206557 is a prime.

It is a super-2 number, since 2×2427505206557² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2427505206551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1213752603278 + 1213752603279.

It is an arithmetic number, because the mean of its divisors is an integer number (1213752603279).

Almost surely, 2^{2427505206557} is an apocalyptic number.

It is an amenable number.

2427505206557 is a deficient number, since it is larger than the sum of its proper divisors (1).

2427505206557 is an equidigital number, since it uses as much as digits as its factorization.

2427505206557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5880000, while the sum is 50.

The spelling of 2427505206557 in words is "two trillion, four hundred twenty-seven billion, five hundred five million, two hundred six thousand, five hundred fifty-seven".