11605201639 has 2 divisors, whose sum is σ = 11605201640. Its totient is φ = 11605201638.

The previous prime is 11605201579. The next prime is 11605201661. The reversal of 11605201639 is 93610250611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11605201639 - 2¹³ = 11605193447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11605201669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5802600819 + 5802600820.

It is an arithmetic number, because the mean of its divisors is an integer number (5802600820).

Almost surely, 2^11605201639 is an apocalyptic number.

11605201639 is a deficient number, since it is larger than the sum of its proper divisors (1).

11605201639 is an equidigital number, since it uses as much as digits as its factorization.

11605201639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 34.

The spelling of 11605201639 in words is "eleven billion, six hundred five million, two hundred one thousand, six hundred thirty-nine".