20383609077 has 24 divisors (see below), whose sum is σ = 32481205848. Its totient is φ = 12237811200.

The previous prime is 20383609067. The next prime is 20383609111. The reversal of 20383609077 is 77090638302.

It is a happy number.

20383609077 is a `hidden beast` number, since 2 + 0 + 38 + 3 + 609 + 0 + 7 + 7 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 62821476 + 20320787601 = 7926^2 + 142551^2 .

It is not a de Polignac number, because 20383609077 - 2¹⁹ = 20383084789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20383609067) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2119824 + ... + 2129417.

It is an arithmetic number, because the mean of its divisors is an integer number (1353383577).

Almost surely, 2^20383609077 is an apocalyptic number.

It is an amenable number.

20383609077 is a deficient number, since it is larger than the sum of its proper divisors (12097596771).

20383609077 is a wasteful number, since it uses less digits than its factorization.

20383609077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4249301 (or 4249298 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The spelling of 20383609077 in words is "twenty billion, three hundred eighty-three million, six hundred nine thousand, seventy-seven".