23854402709 has 2 divisors, whose sum is σ = 23854402710. Its totient is φ = 23854402708.

The previous prime is 23854402673. The next prime is 23854402799. The reversal of 23854402709 is 90720445832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19907799025 + 3946603684 = 141095^2 + 62822^2 .

It is a cyclic number.

It is not a de Polignac number, because 23854402709 - 2¹⁶ = 23854337173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23854402709.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23854402799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11927201354 + 11927201355.

It is an arithmetic number, because the mean of its divisors is an integer number (11927201355).

Almost surely, 2^23854402709 is an apocalyptic number.

It is an amenable number.

23854402709 is a deficient number, since it is larger than the sum of its proper divisors (1).

23854402709 is an equidigital number, since it uses as much as digits as its factorization.

23854402709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 44.

The spelling of 23854402709 in words is "twenty-three billion, eight hundred fifty-four million, four hundred two thousand, seven hundred nine".