20204767545 has 32 divisors (see below), whose sum is σ = 34146545664. Its totient is φ = 10185739200.

The previous prime is 20204767481. The next prime is 20204767547. The reversal of 20204767545 is 54576740202.

It is not a de Polignac number, because 20204767545 - 2⁶ = 20204767481 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20204767497 and 20204767506.

It is not an unprimeable number, because it can be changed into a prime (20204767547) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 485251 + ... + 525240.

It is an arithmetic number, because the mean of its divisors is an integer number (1067079552).

Almost surely, 2^20204767545 is an apocalyptic number.

It is an amenable number.

20204767545 is a deficient number, since it is larger than the sum of its proper divisors (13941778119).

20204767545 is a wasteful number, since it uses less digits than its factorization.

20204767545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010573.

The product of its (nonzero) digits is 470400, while the sum is 42.

The spelling of 20204767545 in words is "twenty billion, two hundred four million, seven hundred sixty-seven thousand, five hundred forty-five".