8540268737639 has 2 divisors, whose sum is σ = 8540268737640. Its totient is φ = 8540268737638.

The previous prime is 8540268737617. The next prime is 8540268737669. The reversal of 8540268737639 is 9367378620458.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8540268737639 - 2³² = 8535973770343 is a prime.

It is a super-2 number, since 2×8540268737639² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8540268737669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4270134368819 + 4270134368820.

It is an arithmetic number, because the mean of its divisors is an integer number (4270134368820).

Almost surely, 2^{8540268737639} is an apocalyptic number.

8540268737639 is a deficient number, since it is larger than the sum of its proper divisors (1).

8540268737639 is an equidigital number, since it uses as much as digits as its factorization.

8540268737639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 365783040, while the sum is 68.

The spelling of 8540268737639 in words is "eight trillion, five hundred forty billion, two hundred sixty-eight million, seven hundred thirty-seven thousand, six hundred thirty-nine".