20434515075 has 72 divisors (see below), whose sum is σ = 39504742368. Its totient is φ = 10037399040.

The previous prime is 20434515019. The next prime is 20434515097. The reversal of 20434515075 is 57051543402.

20434515075 is a `hidden beast` number, since 2 + 0 + 434 + 5 + 150 + 75 = 666.

It is not a de Polignac number, because 20434515075 - 2⁸ = 20434514819 is a prime.

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 71 ways as a sum of consecutive naturals, for example, 1329082 + ... + 1344368.

Almost surely, 2^20434515075 is an apocalyptic number.

20434515075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20434515075 is a deficient number, since it is larger than the sum of its proper divisors (19070227293).

20434515075 is a wasteful number, since it uses less digits than its factorization.

20434515075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15773 (or 15765 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 36.

The spelling of 20434515075 in words is "twenty billion, four hundred thirty-four million, five hundred fifteen thousand, seventy-five".