20315433534601 has 4 divisors (see below), whose sum is σ = 20315450742804. Its totient is φ = 20315416326400.

The previous prime is 20315433534593. The next prime is 20315433534673. The reversal of 20315433534601 is 10643533451302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14583622960201 + 5731810574400 = 3818851^2 + 2394120^2 .

It is a cyclic number.

It is not a de Polignac number, because 20315433534601 - 2³ = 20315433534593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20315433532601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6691540 + ... + 9241621.

It is an arithmetic number, because the mean of its divisors is an integer number (5078862685701).

Almost surely, 2^{20315433534601} is an apocalyptic number.

It is an amenable number.

20315433534601 is a deficient number, since it is larger than the sum of its proper divisors (17208203).

20315433534601 is a wasteful number, since it uses less digits than its factorization.

20315433534601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17208202.

The product of its (nonzero) digits is 388800, while the sum is 40.

Adding to 20315433534601 its reverse (10643533451302), we get a palindrome (30958966985903).

The spelling of 20315433534601 in words is "twenty trillion, three hundred fifteen billion, four hundred thirty-three million, five hundred thirty-four thousand, six hundred one".