20742360773 has 16 divisors (see below), whose sum is σ = 22200744384. Its totient is φ = 19310995200.

The previous prime is 20742360757. The next prime is 20742360811. The reversal of 20742360773 is 37706324702.

It is a cyclic number.

It is not a de Polignac number, because 20742360773 - 2⁴ = 20742360757 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20742360773.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20742360703) 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, 1266986 + ... + 1283252.

It is an arithmetic number, because the mean of its divisors is an integer number (1387546524).

Almost surely, 2^20742360773 is an apocalyptic number.

It is an amenable number.

20742360773 is a deficient number, since it is larger than the sum of its proper divisors (1458383611).

20742360773 is a wasteful number, since it uses less digits than its factorization.

20742360773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17092.

The product of its (nonzero) digits is 296352, while the sum is 41.

The spelling of 20742360773 in words is "twenty billion, seven hundred forty-two million, three hundred sixty thousand, seven hundred seventy-three".