11861653607 has 2 divisors, whose sum is σ = 11861653608. Its totient is φ = 11861653606.

The previous prime is 11861653579. The next prime is 11861653619. The reversal of 11861653607 is 70635616811.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11861653607 - 2⁸ = 11861653351 is a prime.

It is a super-2 number, since 2×11861653607² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11861653807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5930826803 + 5930826804.

It is an arithmetic number, because the mean of its divisors is an integer number (5930826804).

Almost surely, 2^11861653607 is an apocalyptic number.

11861653607 is a deficient number, since it is larger than the sum of its proper divisors (1).

11861653607 is an equidigital number, since it uses as much as digits as its factorization.

11861653607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 11861653607 in words is "eleven billion, eight hundred sixty-one million, six hundred fifty-three thousand, six hundred seven".