20752305777 has 12 divisors (see below), whose sum is σ = 34257774720. Its totient is φ = 11858460408.

The previous prime is 20752305733. The next prime is 20752305793. The reversal of 20752305777 is 77750325702.

It is a happy number.

20752305777 is a `hidden beast` number, since 2 + 0 + 7 + 523 + 0 + 57 + 77 = 666.

It is not a de Polignac number, because 20752305777 - 2⁸ = 20752305521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20752305377) 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 11 ways as a sum of consecutive naturals, for example, 164700777 + ... + 164700902.

It is an arithmetic number, because the mean of its divisors is an integer number (2854814560).

Almost surely, 2^20752305777 is an apocalyptic number.

It is an amenable number.

20752305777 is a deficient number, since it is larger than the sum of its proper divisors (13505468943).

20752305777 is a wasteful number, since it uses less digits than its factorization.

20752305777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329401692 (or 329401689 counting only the distinct ones).

The product of its (nonzero) digits is 720300, while the sum is 45.

The spelling of 20752305777 in words is "twenty billion, seven hundred fifty-two million, three hundred five thousand, seven hundred seventy-seven".