2567641357 has 2 divisors, whose sum is σ = 2567641358. Its totient is φ = 2567641356.

The previous prime is 2567641319. The next prime is 2567641403. The reversal of 2567641357 is 7531467652.

It is an a-pointer prime, because the next prime (2567641403) can be obtained adding 2567641357 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1538129961 + 1029511396 = 39219^2 + 32086^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2567641357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2567641157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1283820678 + 1283820679.

It is an arithmetic number, because the mean of its divisors is an integer number (1283820679).

Almost surely, 2^2567641357 is an apocalyptic number.

It is an amenable number.

2567641357 is a deficient number, since it is larger than the sum of its proper divisors (1).

2567641357 is an equidigital number, since it uses as much as digits as its factorization.

2567641357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1058400, while the sum is 46.

The square root of 2567641357 is about 50671.8990861799. The cubic root of 2567641357 is about 1369.3405029034.

It can be divided in two parts, 256764 and 1357, that added together give a triangular number (258121 = T₇₁₈).

The spelling of 2567641357 in words is "two billion, five hundred sixty-seven million, six hundred forty-one thousand, three hundred fifty-seven".