20055583061 has 2 divisors, whose sum is σ = 20055583062. Its totient is φ = 20055583060.

The previous prime is 20055583049. The next prime is 20055583063. The reversal of 20055583061 is 16038555002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19601680036 + 453903025 = 140006^2 + 21305^2 .

It is a cyclic number.

It is not a de Polignac number, because 20055583061 - 2⁶ = 20055582997 is a prime.

It is a super-3 number, since 3×20055583061³ (a number of 32 digits) contains 333 as substring.

Together with 20055583063, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20055583063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10027791530 + 10027791531.

It is an arithmetic number, because the mean of its divisors is an integer number (10027791531).

Almost surely, 2^20055583061 is an apocalyptic number.

It is an amenable number.

20055583061 is a deficient number, since it is larger than the sum of its proper divisors (1).

20055583061 is an equidigital number, since it uses as much as digits as its factorization.

20055583061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36000, while the sum is 35.

The spelling of 20055583061 in words is "twenty billion, fifty-five million, five hundred eighty-three thousand, sixty-one".