20199461459 has 2 divisors, whose sum is σ = 20199461460. Its totient is φ = 20199461458.

The previous prime is 20199461441. The next prime is 20199461473. The reversal of 20199461459 is 95416499102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20199461459 - 2¹² = 20199457363 is a prime.

It is not a weakly prime, because it can be changed into another prime (20199461159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10099730729 + 10099730730.

It is an arithmetic number, because the mean of its divisors is an integer number (10099730730).

Almost surely, 2^20199461459 is an apocalyptic number.

20199461459 is a deficient number, since it is larger than the sum of its proper divisors (1).

20199461459 is an equidigital number, since it uses as much as digits as its factorization.

20199461459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 699840, while the sum is 50.

The spelling of 20199461459 in words is "twenty billion, one hundred ninety-nine million, four hundred sixty-one thousand, four hundred fifty-nine".