20346512536415 has 16 divisors (see below), whose sum is σ = 26739614916000. Its totient is φ = 14770453948032.

The previous prime is 20346512536411. The next prime is 20346512536447. The reversal of 20346512536415 is 51463521564302.

It is a cyclic number.

It is not a de Polignac number, because 20346512536415 - 2² = 20346512536411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20346512536415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20346512536411) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2652735740 + ... + 2652743409.

It is an arithmetic number, because the mean of its divisors is an integer number (1671225932250).

Almost surely, 2^{20346512536415} is an apocalyptic number.

20346512536415 is a deficient number, since it is larger than the sum of its proper divisors (6393102379585).

20346512536415 is a wasteful number, since it uses less digits than its factorization.

20346512536415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5305479226.

The product of its (nonzero) digits is 2592000, while the sum is 47.

The spelling of 20346512536415 in words is "twenty trillion, three hundred forty-six billion, five hundred twelve million, five hundred thirty-six thousand, four hundred fifteen".