20445436052530 has 8 divisors (see below), whose sum is σ = 36801784894572. Its totient is φ = 8178174421008.

The previous prime is 20445436052519. The next prime is 20445436052543. The reversal of 20445436052530 is 3525063454402.

It can be written as a sum of positive squares in 2 ways, for example, as 19570333802569 + 875102249961 = 4423837^2 + 935469^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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, 1022271802617 + ... + 1022271802636.

Almost surely, 2^{20445436052530} is an apocalyptic number.

20445436052530 is a deficient number, since it is larger than the sum of its proper divisors (16356348842042).

20445436052530 is a wasteful number, since it uses less digits than its factorization.

20445436052530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2044543605260.

The product of its (nonzero) digits is 1728000, while the sum is 43.

The spelling of 20445436052530 in words is "twenty trillion, four hundred forty-five billion, four hundred thirty-six million, fifty-two thousand, five hundred thirty".