20313133545515 has 8 divisors (see below), whose sum is σ = 24375784444128. Its totient is φ = 16250490710080.

The previous prime is 20313133545479. The next prime is 20313133545527. The reversal of 20313133545515 is 51554533131302.

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

It is not a de Polignac number, because 20313133545515 - 2¹⁰ = 20313133544491 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8916410 + ... + 10960320.

It is an arithmetic number, because the mean of its divisors is an integer number (3046973055516).

Almost surely, 2^{20313133545515} is an apocalyptic number.

20313133545515 is a deficient number, since it is larger than the sum of its proper divisors (4062650898613).

20313133545515 is a wasteful number, since it uses less digits than its factorization.

20313133545515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4031589.

The product of its (nonzero) digits is 405000, while the sum is 41.

Adding to 20313133545515 its reverse (51554533131302), we get a palindrome (71867666676817).

The spelling of 20313133545515 in words is "twenty trillion, three hundred thirteen billion, one hundred thirty-three million, five hundred forty-five thousand, five hundred fifteen".