20036475077 has 4 divisors (see below), whose sum is σ = 21215091276. Its totient is φ = 18857858880.

The previous prime is 20036475071. The next prime is 20036475113. The reversal of 20036475077 is 77057463002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5369811841 + 14666663236 = 73279^2 + 121106^2 .

It is a cyclic number.

It is not a de Polignac number, because 20036475077 - 2¹⁰ = 20036474053 is a prime.

It is a super-2 number, since 2×20036475077² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20036475071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 589308074 + ... + 589308107.

It is an arithmetic number, because the mean of its divisors is an integer number (5303772819).

Almost surely, 2^20036475077 is an apocalyptic number.

It is an amenable number.

20036475077 is a deficient number, since it is larger than the sum of its proper divisors (1178616199).

20036475077 is a wasteful number, since it uses less digits than its factorization.

20036475077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178616198.

The product of its (nonzero) digits is 246960, while the sum is 41.

The spelling of 20036475077 in words is "twenty billion, thirty-six million, four hundred seventy-five thousand, seventy-seven".