20315305535297 has 8 divisors (see below), whose sum is σ = 20478519936000. Its totient is φ = 20152141937424.

The previous prime is 20315305535269. The next prime is 20315305535309. The reversal of 20315305535297 is 79253550351302.

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

It is a cyclic number.

It is not a de Polignac number, because 20315305535297 - 2²² = 20315301340993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20315305535207) 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, 11897522 + ... + 13497467.

It is an arithmetic number, because the mean of its divisors is an integer number (2559814992000).

Almost surely, 2^{20315305535297} is an apocalyptic number.

It is an amenable number.

20315305535297 is a deficient number, since it is larger than the sum of its proper divisors (163214400703).

20315305535297 is a wasteful number, since it uses less digits than its factorization.

20315305535297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25401415.

The product of its (nonzero) digits is 4252500, while the sum is 50.

Adding to 20315305535297 its reverse (79253550351302), we get a palindrome (99568855886599).

The spelling of 20315305535297 in words is "twenty trillion, three hundred fifteen billion, three hundred five million, five hundred thirty-five thousand, two hundred ninety-seven".