20336057077 has 12 divisors (see below), whose sum is σ = 23660386956. Its totient is φ = 17427842880.

The previous prime is 20336057059. The next prime is 20336057083. The reversal of 20336057077 is 77075063302.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8069608561 + 12266448516 = 89831^2 + 110754^2 .

It is not a de Polignac number, because 20336057077 - 2¹¹ = 20336055029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20336057057) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 271473 + ... + 338185.

It is an arithmetic number, because the mean of its divisors is an integer number (1971698913).

Almost surely, 2^20336057077 is an apocalyptic number.

It is an amenable number.

20336057077 is a deficient number, since it is larger than the sum of its proper divisors (3324329879).

20336057077 is an equidigital number, since it uses as much as digits as its factorization.

20336057077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72948 (or 72941 counting only the distinct ones).

The product of its (nonzero) digits is 185220, while the sum is 40.

The spelling of 20336057077 in words is "twenty billion, three hundred thirty-six million, fifty-seven thousand, seventy-seven".