20769573573 has 24 divisors (see below), whose sum is σ = 34331651328. Its totient is φ = 11852622432.

The previous prime is 20769573563. The next prime is 20769573637. The reversal of 20769573573 is 37537596702.

20769573573 is a `hidden beast` number, since 2 + 0 + 7 + 69 + 5 + 7 + 3 + 573 = 666.

It is not a de Polignac number, because 20769573573 - 2⁶ = 20769573509 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20769573563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 170061 + ... + 265442.

It is an arithmetic number, because the mean of its divisors is an integer number (1430485472).

Almost surely, 2^20769573573 is an apocalyptic number.

It is an amenable number.

20769573573 is a deficient number, since it is larger than the sum of its proper divisors (13562077755).

20769573573 is a wasteful number, since it uses less digits than its factorization.

20769573573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436273 (or 436270 counting only the distinct ones).

The product of its (nonzero) digits is 8334900, while the sum is 54.

The spelling of 20769573573 in words is "twenty billion, seven hundred sixty-nine million, five hundred seventy-three thousand, five hundred seventy-three".