23251780829 has 2 divisors, whose sum is σ = 23251780830. Its totient is φ = 23251780828.

The previous prime is 23251780807. The next prime is 23251780837. The reversal of 23251780829 is 92808715232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21580197604 + 1671583225 = 146902^2 + 40885^2 .

It is a cyclic number.

It is not a de Polignac number, because 23251780829 - 2¹² = 23251776733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23251780859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11625890414 + 11625890415.

It is an arithmetic number, because the mean of its divisors is an integer number (11625890415).

Almost surely, 2^23251780829 is an apocalyptic number.

It is an amenable number.

23251780829 is a deficient number, since it is larger than the sum of its proper divisors (1).

23251780829 is an equidigital number, since it uses as much as digits as its factorization.

23251780829 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 47.

The spelling of 23251780829 in words is "twenty-three billion, two hundred fifty-one million, seven hundred eighty thousand, eight hundred twenty-nine".