20315432533541 has 12 divisors (see below), whose sum is σ = 22180284074700. Its totient is φ = 18582537189888.

The previous prime is 20315432533523. The next prime is 20315432533547. The reversal of 20315432533541 is 14533523451302.

It can be written as a sum of positive squares in 2 ways, for example, as 4386385696900 + 15929046836641 = 2094370^2 + 3991121^2 .

It is not a de Polignac number, because 20315432533541 - 2³⁸ = 20040554626597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20315432533547) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 970255676 + ... + 970276613.

It is an arithmetic number, because the mean of its divisors is an integer number (1848357006225).

Almost surely, 2^{20315432533541} is an apocalyptic number.

It is an amenable number.

20315432533541 is a deficient number, since it is larger than the sum of its proper divisors (1864851541159).

20315432533541 is a wasteful number, since it uses less digits than its factorization.

20315432533541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1940532356 (or 1940532337 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 41.

Adding to 20315432533541 its reverse (14533523451302), we get a palindrome (34848955984843).

The spelling of 20315432533541 in words is "twenty trillion, three hundred fifteen billion, four hundred thirty-two million, five hundred thirty-three thousand, five hundred forty-one".