20708335485 has 24 divisors (see below), whose sum is σ = 35963384184. Its totient is φ = 11023234560.

The previous prime is 20708335481. The next prime is 20708335523. The reversal of 20708335485 is 58453380702.

20708335485 is a `hidden beast` number, since 2 + 0 + 70 + 8 + 33 + 548 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2574750564 + 18133584921 = 50742^2 + 134661^2 .

It is not a de Polignac number, because 20708335485 - 2² = 20708335481 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 20708335485.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20708335481) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 418192 + ... + 465081.

It is an arithmetic number, because the mean of its divisors is an integer number (1498474341).

Almost surely, 2^20708335485 is an apocalyptic number.

It is an amenable number.

20708335485 is a deficient number, since it is larger than the sum of its proper divisors (15255048699).

20708335485 is a wasteful number, since it uses less digits than its factorization.

20708335485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883805 (or 883802 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 45.

The spelling of 20708335485 in words is "twenty billion, seven hundred eight million, three hundred thirty-five thousand, four hundred eighty-five".