23920829467861 has 2 divisors, whose sum is σ = 23920829467862. Its totient is φ = 23920829467860.

The previous prime is 23920829467819. The next prime is 23920829467963. The reversal of 23920829467861 is 16876492802932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12526113600625 + 11394715867236 = 3539225^2 + 3375606^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23920829467861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23920829467811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11960414733930 + 11960414733931.

It is an arithmetic number, because the mean of its divisors is an integer number (11960414733931).

Almost surely, 2^{23920829467861} is an apocalyptic number.

It is an amenable number.

23920829467861 is a deficient number, since it is larger than the sum of its proper divisors (1).

23920829467861 is an equidigital number, since it uses as much as digits as its factorization.

23920829467861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 125411328, while the sum is 67.

The spelling of 23920829467861 in words is "twenty-three trillion, nine hundred twenty billion, eight hundred twenty-nine million, four hundred sixty-seven thousand, eight hundred sixty-one".