20847432580575 has 96 divisors (see below), whose sum is σ = 35134522675200. Its totient is φ = 10904466357120.

The previous prime is 20847432580553. The next prime is 20847432580591. The reversal of 20847432580575 is 57508523474802.

It is not a de Polignac number, because 20847432580575 - 2¹³ = 20847432572383 is a prime.

It is a super-3 number, since 3×20847432580575³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3802191784 + ... + 3802197266.

It is an arithmetic number, because the mean of its divisors is an integer number (365984611200).

Almost surely, 2^{20847432580575} is an apocalyptic number.

20847432580575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20847432580575 is a deficient number, since it is larger than the sum of its proper divisors (14287090094625).

20847432580575 is a wasteful number, since it uses less digits than its factorization.

20847432580575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7421 (or 7416 counting only the distinct ones).

The product of its (nonzero) digits is 75264000, while the sum is 60.

The spelling of 20847432580575 in words is "twenty trillion, eight hundred forty-seven billion, four hundred thirty-two million, five hundred eighty thousand, five hundred seventy-five".