20774893658 has 32 divisors (see below), whose sum is σ = 33393185280. Its totient is φ = 9670510080.

The previous prime is 20774893651. The next prime is 20774893663. The reversal of 20774893658 is 85639847702.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20774893597 and 20774893606.

It is not an unprimeable number, because it can be changed into a prime (20774893651) 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, 364778 + ... + 417866.

It is an arithmetic number, because the mean of its divisors is an integer number (1043537040).

Almost surely, 2^20774893658 is an apocalyptic number.

20774893658 is a deficient number, since it is larger than the sum of its proper divisors (12618291622).

20774893658 is a wasteful number, since it uses less digits than its factorization.

20774893658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53342.

The product of its (nonzero) digits is 20321280, while the sum is 59.

The spelling of 20774893658 in words is "twenty billion, seven hundred seventy-four million, eight hundred ninety-three thousand, six hundred fifty-eight".