20414436315557 has 2 divisors, whose sum is σ = 20414436315558. Its totient is φ = 20414436315556.

The previous prime is 20414436315541. The next prime is 20414436315577. The reversal of 20414436315557 is 75551363441402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20005349434756 + 409086880801 = 4472734^2 + 639599^2 .

It is a cyclic number.

It is not a de Polignac number, because 20414436315557 - 2⁴ = 20414436315541 is a prime.

It is a super-2 number, since 2×20414436315557² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20414436315577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10207218157778 + 10207218157779.

It is an arithmetic number, because the mean of its divisors is an integer number (10207218157779).

Almost surely, 2^{20414436315557} is an apocalyptic number.

It is an amenable number.

20414436315557 is a deficient number, since it is larger than the sum of its proper divisors (1).

20414436315557 is an equidigital number, since it uses as much as digits as its factorization.

20414436315557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048000, while the sum is 50.

Adding to 20414436315557 its reverse (75551363441402), we get a palindrome (95965799756959).

The spelling of 20414436315557 in words is "twenty trillion, four hundred fourteen billion, four hundred thirty-six million, three hundred fifteen thousand, five hundred fifty-seven".