11701261639 has 2 divisors, whose sum is σ = 11701261640. Its totient is φ = 11701261638.

The previous prime is 11701261529. The next prime is 11701261679. The reversal of 11701261639 is 93616210711.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11701261639 - 2²⁷ = 11567043911 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11701261598 and 11701261607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11701261679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5850630819 + 5850630820.

It is an arithmetic number, because the mean of its divisors is an integer number (5850630820).

Almost surely, 2^11701261639 is an apocalyptic number.

11701261639 is a deficient number, since it is larger than the sum of its proper divisors (1).

11701261639 is an equidigital number, since it uses as much as digits as its factorization.

11701261639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 37.

The spelling of 11701261639 in words is "eleven billion, seven hundred one million, two hundred sixty-one thousand, six hundred thirty-nine".