20464122164029 has 2 divisors, whose sum is σ = 20464122164030. Its totient is φ = 20464122164028.

The previous prime is 20464122163987. The next prime is 20464122164131. The reversal of 20464122164029 is 92046122146402.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20459356332804 + 4765831225 = 4523202^2 + 69035^2 .

It is a cyclic number.

It is not a de Polignac number, because 20464122164029 - 2¹⁷ = 20464122032957 is a prime.

It is a super-3 number, since 3×20464122164029³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20464122164429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10232061082014 + 10232061082015.

It is an arithmetic number, because the mean of its divisors is an integer number (10232061082015).

Almost surely, 2^{20464122164029} is an apocalyptic number.

It is an amenable number.

20464122164029 is a deficient number, since it is larger than the sum of its proper divisors (1).

20464122164029 is an equidigital number, since it uses as much as digits as its factorization.

20464122164029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 331776, while the sum is 43.

The spelling of 20464122164029 in words is "twenty trillion, four hundred sixty-four billion, one hundred twenty-two million, one hundred sixty-four thousand, twenty-nine".