2640137527 has 2 divisors, whose sum is σ = 2640137528. Its totient is φ = 2640137526.

The previous prime is 2640137503. The next prime is 2640137557. The reversal of 2640137527 is 7257310462.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2640137527 - 2⁷ = 2640137399 is a prime.

It is a super-2 number, since 2×2640137527² = 13940652322947351458, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2640137557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1320068763 + 1320068764.

It is an arithmetic number, because the mean of its divisors is an integer number (1320068764).

Almost surely, 2^2640137527 is an apocalyptic number.

2640137527 is a deficient number, since it is larger than the sum of its proper divisors (1).

2640137527 is an equidigital number, since it uses as much as digits as its factorization.

2640137527 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 2640137527 is about 51382.2686050353. The cubic root of 2640137527 is about 1382.1086448223.

Adding to 2640137527 its reverse (7257310462), we get a palindrome (9897447989).

The spelling of 2640137527 in words is "two billion, six hundred forty million, one hundred thirty-seven thousand, five hundred twenty-seven".