20307849440255 has 16 divisors (see below), whose sum is σ = 26261710622784. Its totient is φ = 14986439696640.

The previous prime is 20307849440251. The next prime is 20307849440377. The reversal of 20307849440255 is 55204494870302.

It is not a de Polignac number, because 20307849440255 - 2² = 20307849440251 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20307849440197 and 20307849440206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20307849440251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105382619 + ... + 105575148.

It is an arithmetic number, because the mean of its divisors is an integer number (1641356913924).

Almost surely, 2^{20307849440255} is an apocalyptic number.

20307849440255 is a deficient number, since it is larger than the sum of its proper divisors (5953861182529).

20307849440255 is a wasteful number, since it uses less digits than its factorization.

20307849440255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210959266.

The product of its (nonzero) digits is 9676800, while the sum is 53.

The spelling of 20307849440255 in words is "twenty trillion, three hundred seven billion, eight hundred forty-nine million, four hundred forty thousand, two hundred fifty-five".