20475424353747 has 64 divisors (see below), whose sum is σ = 31593227102208. Its totient is φ = 11657597952000.

The previous prime is 20475424353731. The next prime is 20475424353749. The reversal of 20475424353747 is 74735342457402.

It is not a de Polignac number, because 20475424353747 - 2⁴ = 20475424353731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20475424353749) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 695552913 + ... + 695582349.

It is an arithmetic number, because the mean of its divisors is an integer number (493644173472).

Almost surely, 2^{20475424353747} is an apocalyptic number.

20475424353747 is a deficient number, since it is larger than the sum of its proper divisors (11117802748461).

20475424353747 is a wasteful number, since it uses less digits than its factorization.

20475424353747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31740.

The product of its (nonzero) digits is 79027200, while the sum is 57.

The spelling of 20475424353747 in words is "twenty trillion, four hundred seventy-five billion, four hundred twenty-four million, three hundred fifty-three thousand, seven hundred forty-seven".