11858975641 has 2 divisors, whose sum is σ = 11858975642. Its totient is φ = 11858975640.

The previous prime is 11858975629. The next prime is 11858975683. The reversal of 11858975641 is 14657985811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10651065616 + 1207910025 = 103204^2 + 34755^2 .

It is a cyclic number.

It is not a de Polignac number, because 11858975641 - 2⁹ = 11858975129 is a prime.

It is not a weakly prime, because it can be changed into another prime (11858975441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5929487820 + 5929487821.

It is an arithmetic number, because the mean of its divisors is an integer number (5929487821).

Almost surely, 2^11858975641 is an apocalyptic number.

It is an amenable number.

11858975641 is a deficient number, since it is larger than the sum of its proper divisors (1).

11858975641 is an equidigital number, since it uses as much as digits as its factorization.

11858975641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2419200, while the sum is 55.

The spelling of 11858975641 in words is "eleven billion, eight hundred fifty-eight million, nine hundred seventy-five thousand, six hundred forty-one".