20523662162903 has 2 divisors, whose sum is σ = 20523662162904. Its totient is φ = 20523662162902.

The previous prime is 20523662162879. The next prime is 20523662162959. The reversal of 20523662162903 is 30926126632502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20523662162903 - 2²⁴ = 20523645385687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20523662162203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10261831081451 + 10261831081452.

It is an arithmetic number, because the mean of its divisors is an integer number (10261831081452).

Almost surely, 2^{20523662162903} is an apocalyptic number.

20523662162903 is a deficient number, since it is larger than the sum of its proper divisors (1).

20523662162903 is an equidigital number, since it uses as much as digits as its factorization.

20523662162903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1399680, while the sum is 47.

The spelling of 20523662162903 in words is "twenty trillion, five hundred twenty-three billion, six hundred sixty-two million, one hundred sixty-two thousand, nine hundred three".