20215445510093 has 2 divisors, whose sum is σ = 20215445510094. Its totient is φ = 20215445510092.

The previous prime is 20215445510021. The next prime is 20215445510147. The reversal of 20215445510093 is 39001554451202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17127124311049 + 3088321199044 = 4138493^2 + 1757362^2 .

It is a cyclic number.

It is not a de Polignac number, because 20215445510093 - 2²⁸ = 20215177074637 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20215445510093.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20215445510003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10107722755046 + 10107722755047.

It is an arithmetic number, because the mean of its divisors is an integer number (10107722755047).

Almost surely, 2^{20215445510093} is an apocalyptic number.

It is an amenable number.

20215445510093 is a deficient number, since it is larger than the sum of its proper divisors (1).

20215445510093 is an equidigital number, since it uses as much as digits as its factorization.

20215445510093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216000, while the sum is 41.

Adding to 20215445510093 its reverse (39001554451202), we get a palindrome (59216999961295).

The spelling of 20215445510093 in words is "twenty trillion, two hundred fifteen billion, four hundred forty-five million, five hundred ten thousand, ninety-three".