20434416601 has 3 divisors (see below), whose sum is σ = 20434559551. Its totient is φ = 20434273652.

The previous prime is 20434416593. The next prime is 20434416617. The reversal of 20434416601 is 10661443402.

The square root of 20434416601 is 142949.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 10414406601 + 10020010000 = 102051^2 + 100100^2 .

It is not a de Polignac number, because 20434416601 - 2³ = 20434416593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20434416671) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 71475 + ... + 214423.

Almost surely, 2^20434416601 is an apocalyptic number.

20434416601 is the 142949-th square number.

20434416601 is the 71475-th centered octagonal number.

It is an amenable number.

20434416601 is a deficient number, since it is larger than the sum of its proper divisors (142950).

20434416601 is an frugal number, since it uses more digits than its factorization.

20434416601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285898 (or 142949 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The spelling of 20434416601 in words is "twenty billion, four hundred thirty-four million, four hundred sixteen thousand, six hundred one".