20434264161 has 8 divisors (see below), whose sum is σ = 27354235104. Its totient is φ = 13568568000.

The previous prime is 20434264159. The next prime is 20434264177. The reversal of 20434264161 is 16146243402.

It is a happy number.

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

It is not a de Polignac number, because 20434264161 - 2¹ = 20434264159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20434264561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13567816 + ... + 13569321.

It is an arithmetic number, because the mean of its divisors is an integer number (3419279388).

Almost surely, 2^20434264161 is an apocalyptic number.

It is an amenable number.

20434264161 is a deficient number, since it is larger than the sum of its proper divisors (6919970943).

20434264161 is a wasteful number, since it uses less digits than its factorization.

20434264161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27137391.

The product of its (nonzero) digits is 27648, while the sum is 33.

The spelling of 20434264161 in words is "twenty billion, four hundred thirty-four million, two hundred sixty-four thousand, one hundred sixty-one".