20773136493 has 12 divisors (see below), whose sum is σ = 30009077280. Its totient is φ = 13847171976.

The previous prime is 20773136473. The next prime is 20773136509. The reversal of 20773136493 is 39463137702.

It is a happy number.

20773136493 is a `hidden beast` number, since 20 + 7 + 7 + 3 + 136 + 493 = 666.

It is not a de Polignac number, because 20773136493 - 2¹⁶ = 20773070957 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 (20773136473) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46233 + ... + 209006.

It is an arithmetic number, because the mean of its divisors is an integer number (2500756440).

Almost surely, 2^20773136493 is an apocalyptic number.

It is an amenable number.

20773136493 is a deficient number, since it is larger than the sum of its proper divisors (9235940787).

20773136493 is a wasteful number, since it uses less digits than its factorization.

20773136493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264288 (or 264285 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 45.

The spelling of 20773136493 in words is "twenty billion, seven hundred seventy-three million, one hundred thirty-six thousand, four hundred ninety-three".