20406464454083 has 2 divisors, whose sum is σ = 20406464454084. Its totient is φ = 20406464454082.

The previous prime is 20406464454023. The next prime is 20406464454109. The reversal of 20406464454083 is 38045446460402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20406464454083 - 2¹⁴ = 20406464437699 is a prime.

It is not a weakly prime, because it can be changed into another prime (20406464454023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10203232227041 + 10203232227042.

It is an arithmetic number, because the mean of its divisors is an integer number (10203232227042).

Almost surely, 2^{20406464454083} is an apocalyptic number.

20406464454083 is a deficient number, since it is larger than the sum of its proper divisors (1).

20406464454083 is an equidigital number, since it uses as much as digits as its factorization.

20406464454083 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8847360, while the sum is 50.

The spelling of 20406464454083 in words is "twenty trillion, four hundred six billion, four hundred sixty-four million, four hundred fifty-four thousand, eighty-three".