20053585997 has 2 divisors, whose sum is σ = 20053585998. Its totient is φ = 20053585996.

The previous prime is 20053585987. The next prime is 20053586009. The reversal of 20053585997 is 79958535002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18448702276 + 1604883721 = 135826^2 + 40061^2 .

It is a cyclic number.

It is not a de Polignac number, because 20053585997 - 2¹⁰ = 20053584973 is a prime.

It is a super-2 number, since 2×20053585997² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20053585907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10026792998 + 10026792999.

It is an arithmetic number, because the mean of its divisors is an integer number (10026792999).

Almost surely, 2^20053585997 is an apocalyptic number.

It is an amenable number.

20053585997 is a deficient number, since it is larger than the sum of its proper divisors (1).

20053585997 is an equidigital number, since it uses as much as digits as its factorization.

20053585997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3402000, while the sum is 53.

The spelling of 20053585997 in words is "twenty billion, fifty-three million, five hundred eighty-five thousand, nine hundred ninety-seven".