20346513511312 has 40 divisors (see below), whose sum is σ = 40499088696000. Its totient is φ = 9895302525312.

The previous prime is 20346513511301. The next prime is 20346513511319. The reversal of 20346513511312 is 21311531564302.

It is a super-2 number, since 2×20346513511312² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (20346513511319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3256012 + ... + 7162027.

It is an arithmetic number, because the mean of its divisors is an integer number (1012477217400).

Almost surely, 2^{20346513511312} is an apocalyptic number.

It is an amenable number.

20346513511312 is a deficient number, since it is larger than the sum of its proper divisors (20152575184688).

20346513511312 is a wasteful number, since it uses less digits than its factorization.

20346513511312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10421383 (or 10421377 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 20346513511312 in words is "twenty trillion, three hundred forty-six billion, five hundred thirteen million, five hundred eleven thousand, three hundred twelve".