20072355612773 has 4 divisors (see below), whose sum is σ = 20072375555148. Its totient is φ = 20072335670400.

The previous prime is 20072355612769. The next prime is 20072355612779. The reversal of 20072355612773 is 37721655327002.

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 15246346287649 + 4826009325124 = 3904657^2 + 2196818^2 .

It is a cyclic number.

It is not a de Polignac number, because 20072355612773 - 2² = 20072355612769 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20072355612779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8376386 + ... + 10502787.

It is an arithmetic number, because the mean of its divisors is an integer number (5018093888787).

Almost surely, 2^{20072355612773} is an apocalyptic number.

It is an amenable number.

20072355612773 is a deficient number, since it is larger than the sum of its proper divisors (19942375).

20072355612773 is a wasteful number, since it uses less digits than its factorization.

20072355612773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19942374.

The product of its (nonzero) digits is 3704400, while the sum is 50.

The spelling of 20072355612773 in words is "twenty trillion, seventy-two billion, three hundred fifty-five million, six hundred twelve thousand, seven hundred seventy-three".