20336740741 has 4 divisors (see below), whose sum is σ = 20516712012. Its totient is φ = 20156769472.

The previous prime is 20336740733. The next prime is 20336740813. The reversal of 20336740741 is 14704763302.

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 9831515716 + 10505225025 = 99154^2 + 102495^2 .

It is a cyclic number.

It is not a de Polignac number, because 20336740741 - 2³ = 20336740733 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20336740741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20336740241) 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, 89985466 + ... + 89985691.

It is an arithmetic number, because the mean of its divisors is an integer number (5129178003).

Almost surely, 2^20336740741 is an apocalyptic number.

It is an amenable number.

20336740741 is a deficient number, since it is larger than the sum of its proper divisors (179971271).

20336740741 is a wasteful number, since it uses less digits than its factorization.

20336740741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179971270.

The product of its (nonzero) digits is 84672, while the sum is 37.

The spelling of 20336740741 in words is "twenty billion, three hundred thirty-six million, seven hundred forty thousand, seven hundred forty-one".