20470169475 has 192 divisors, whose sum is σ = 44213836800. Its totient is φ = 9092321280.

The previous prime is 20470169417. The next prime is 20470169497. The reversal of 20470169475 is 57496107402.

20470169475 is a `hidden beast` number, since 20 + 470 + 1 + 6 + 94 + 75 = 666.

It is a Cunningham number, because it is equal to 143074²-1.

It is not a de Polignac number, because 20470169475 - 2¹⁰ = 20470168451 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 20470169475.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 27040797 + ... + 27041553.

It is an arithmetic number, because the mean of its divisors is an integer number (230280400).

Almost surely, 2^20470169475 is an apocalyptic number.

20470169475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20470169475 is an abundant number, since it is smaller than the sum of its proper divisors (23743667325).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20470169475 is a wasteful number, since it uses less digits than its factorization.

20470169475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939 (or 928 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The spelling of 20470169475 in words is "twenty billion, four hundred seventy million, one hundred sixty-nine thousand, four hundred seventy-five".