11961642059 has 2 divisors, whose sum is σ = 11961642060. Its totient is φ = 11961642058.

The previous prime is 11961642053. The next prime is 11961642061. The reversal of 11961642059 is 95024616911.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11961642059 is a prime.

Together with 11961642061, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11961642053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5980821029 + 5980821030.

It is an arithmetic number, because the mean of its divisors is an integer number (5980821030).

Almost surely, 2^11961642059 is an apocalyptic number.

11961642059 is a deficient number, since it is larger than the sum of its proper divisors (1).

11961642059 is an equidigital number, since it uses as much as digits as its factorization.

11961642059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 44.

The spelling of 11961642059 in words is "eleven billion, nine hundred sixty-one million, six hundred forty-two thousand, fifty-nine".