23778204251 has 2 divisors, whose sum is σ = 23778204252. Its totient is φ = 23778204250.

The previous prime is 23778204211. The next prime is 23778204259. The reversal of 23778204251 is 15240287732.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23778204251 - 2³⁰ = 22704462427 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 23778204199 and 23778204208.

It is not a weakly prime, because it can be changed into another prime (23778204259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11889102125 + 11889102126.

It is an arithmetic number, because the mean of its divisors is an integer number (11889102126).

Almost surely, 2^23778204251 is an apocalyptic number.

23778204251 is a deficient number, since it is larger than the sum of its proper divisors (1).

23778204251 is an equidigital number, since it uses as much as digits as its factorization.

23778204251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 188160, while the sum is 41.

The spelling of 23778204251 in words is "twenty-three billion, seven hundred seventy-eight million, two hundred four thousand, two hundred fifty-one".