20169942435 has 40 divisors (see below), whose sum is σ = 36171074016. Its totient is φ = 10752963840.

The previous prime is 20169942389. The next prime is 20169942449. The reversal of 20169942435 is 53424996102.

20169942435 is a `hidden beast` number, since 201 + 6 + 9 + 9 + 4 + 2 + 435 = 666.

It is not a de Polignac number, because 20169942435 - 2⁷ = 20169942307 is a prime.

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

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 39 ways as a sum of consecutive naturals, for example, 1164690 + ... + 1181880.

Almost surely, 2^20169942435 is an apocalyptic number.

20169942435 is a deficient number, since it is larger than the sum of its proper divisors (16001131581).

20169942435 is a wasteful number, since it uses less digits than its factorization.

20169942435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20105 (or 20096 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 20169942435 in words is "twenty billion, one hundred sixty-nine million, nine hundred forty-two thousand, four hundred thirty-five".