23778812503 has 2 divisors, whose sum is σ = 23778812504. Its totient is φ = 23778812502.

The previous prime is 23778812501. The next prime is 23778812521. The reversal of 23778812503 is 30521887732.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23778812503 - 2¹ = 23778812501 is a prime.

Together with 23778812501, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23778812501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11889406251 + 11889406252.

It is an arithmetic number, because the mean of its divisors is an integer number (11889406252).

Almost surely, 2^23778812503 is an apocalyptic number.

23778812503 is a deficient number, since it is larger than the sum of its proper divisors (1).

23778812503 is an equidigital number, since it uses as much as digits as its factorization.

23778812503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 564480, while the sum is 46.

The spelling of 23778812503 in words is "twenty-three billion, seven hundred seventy-eight million, eight hundred twelve thousand, five hundred three".