20045743356136 has 32 divisors (see below), whose sum is σ = 39001345044480. Its totient is φ = 9648770212800.

The previous prime is 20045743356077. The next prime is 20045743356139. The reversal of 20045743356136 is 63165334754002.

It is a self number, because there is not a number n which added to its sum of digits gives 20045743356136.

It is not an unprimeable number, because it can be changed into a prime (20045743356139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211548471 + ... + 211643206.

It is an arithmetic number, because the mean of its divisors is an integer number (1218792032640).

Almost surely, 2^{20045743356136} is an apocalyptic number.

It is an amenable number.

20045743356136 is a deficient number, since it is larger than the sum of its proper divisors (18955601688344).

20045743356136 is a wasteful number, since it uses less digits than its factorization.

20045743356136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423191905 (or 423191901 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 49.

The spelling of 20045743356136 in words is "twenty trillion, forty-five billion, seven hundred forty-three million, three hundred fifty-six thousand, one hundred thirty-six".