20003706066357 has 18 divisors (see below), whose sum is σ = 31287847952322. Its totient is φ = 12309972962976.

The previous prime is 20003706066347. The next prime is 20003706066361. The reversal of 20003706066357 is 75366060730002.

20003706066357 is a `hidden beast` number, since 2 + 0 + 0 + 0 + 3 + 7 + 0 + 6 + 0 + 6 + 635 + 7 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 2633866080561 + 17369839985796 = 1622919^2 + 4167714^2 .

It is not a de Polignac number, because 20003706066357 - 2⁶ = 20003706066293 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20003706066317) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6575838738 + ... + 6575841779.

It is an arithmetic number, because the mean of its divisors is an integer number (1738213775129).

Almost surely, 2^{20003706066357} is an apocalyptic number.

It is an amenable number.

20003706066357 is a deficient number, since it is larger than the sum of its proper divisors (11284141885965).

20003706066357 is a wasteful number, since it uses less digits than its factorization.

20003706066357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13151680549 (or 13151680533 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 45.

Adding to 20003706066357 its reverse (75366060730002), we get a palindrome (95369766796359).

The spelling of 20003706066357 in words is "twenty trillion, three billion, seven hundred six million, sixty-six thousand, three hundred fifty-seven".