20455715561041 has 2 divisors, whose sum is σ = 20455715561042. Its totient is φ = 20455715561040.

The previous prime is 20455715561023. The next prime is 20455715561081. The reversal of 20455715561041 is 14016551755402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20445816107025 + 9899454016 = 4521705^2 + 99496^2 .

It is a cyclic number.

It is not a de Polignac number, because 20455715561041 - 2³⁷ = 20318276607569 is a prime.

It is a super-2 number, since 2×20455715561041² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20455715560982 and 20455715561000.

It is not a weakly prime, because it can be changed into another prime (20455715561011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10227857780520 + 10227857780521.

It is an arithmetic number, because the mean of its divisors is an integer number (10227857780521).

Almost surely, 2^{20455715561041} is an apocalyptic number.

It is an amenable number.

20455715561041 is a deficient number, since it is larger than the sum of its proper divisors (1).

20455715561041 is an equidigital number, since it uses as much as digits as its factorization.

20455715561041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840000, while the sum is 46.

The spelling of 20455715561041 in words is "twenty trillion, four hundred fifty-five billion, seven hundred fifteen million, five hundred sixty-one thousand, forty-one".