20401022371417 has 4 divisors (see below), whose sum is σ = 20401057088820. Its totient is φ = 20400987654016.

The previous prime is 20401022371403. The next prime is 20401022371439. The reversal of 20401022371417 is 71417322010402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19707659727561 + 693362643856 = 4439331^2 + 832684^2 .

It is a cyclic number.

It is not a de Polignac number, because 20401022371417 - 2³⁵ = 20366662633049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20401022371447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16461808 + ... + 17657665.

It is an arithmetic number, because the mean of its divisors is an integer number (5100264272205).

Almost surely, 2^{20401022371417} is an apocalyptic number.

It is an amenable number.

20401022371417 is a deficient number, since it is larger than the sum of its proper divisors (34717403).

20401022371417 is an equidigital number, since it uses as much as digits as its factorization.

20401022371417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34717402.

The product of its (nonzero) digits is 18816, while the sum is 34.

Adding to 20401022371417 its reverse (71417322010402), we get a palindrome (91818344381819).

The spelling of 20401022371417 in words is "twenty trillion, four hundred one billion, twenty-two million, three hundred seventy-one thousand, four hundred seventeen".