20356740496 has 20 divisors (see below), whose sum is σ = 39462122700. Its totient is φ = 10172966912.

The previous prime is 20356740451. The next prime is 20356740497. The reversal of 20356740496 is 69404765302.

It can be written as a sum of positive squares in 2 ways, for example, as 6219530496 + 14137210000 = 78864^2 + 118900^2 .

It is not an unprimeable number, because it can be changed into a prime (20356740497) 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, 306541 + ... + 366988.

It is an arithmetic number, because the mean of its divisors is an integer number (1973106135).

Almost surely, 2^20356740496 is an apocalyptic number.

It is an amenable number.

20356740496 is a deficient number, since it is larger than the sum of its proper divisors (19105382204).

20356740496 is a wasteful number, since it uses less digits than its factorization.

20356740496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675426 (or 675420 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 46.

The spelling of 20356740496 in words is "twenty billion, three hundred fifty-six million, seven hundred forty thousand, four hundred ninety-six".