23857563859 has 2 divisors, whose sum is σ = 23857563860. Its totient is φ = 23857563858.

The previous prime is 23857563787. The next prime is 23857563871. The reversal of 23857563859 is 95836575832.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23857563859 - 2¹¹ = 23857561811 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23857563797 and 23857563806.

It is not a weakly prime, because it can be changed into another prime (23857563889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11928781929 + 11928781930.

It is an arithmetic number, because the mean of its divisors is an integer number (11928781930).

Almost surely, 2^23857563859 is an apocalyptic number.

23857563859 is a deficient number, since it is larger than the sum of its proper divisors (1).

23857563859 is an equidigital number, since it uses as much as digits as its factorization.

23857563859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432000, while the sum is 61.

The spelling of 23857563859 in words is "twenty-three billion, eight hundred fifty-seven million, five hundred sixty-three thousand, eight hundred fifty-nine".