20401012459 has 2 divisors, whose sum is σ = 20401012460. Its totient is φ = 20401012458.

The previous prime is 20401012339. The next prime is 20401012591. The reversal of 20401012459 is 95421010402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20401012459 - 2⁹ = 20401011947 is a prime.

It is not a weakly prime, because it can be changed into another prime (20401010459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10200506229 + 10200506230.

It is an arithmetic number, because the mean of its divisors is an integer number (10200506230).

Almost surely, 2^20401012459 is an apocalyptic number.

20401012459 is a deficient number, since it is larger than the sum of its proper divisors (1).

20401012459 is an equidigital number, since it uses as much as digits as its factorization.

20401012459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 28.

The spelling of 20401012459 in words is "twenty billion, four hundred one million, twelve thousand, four hundred fifty-nine".