20346512616351 has 12 divisors (see below), whose sum is σ = 29389456423600. Its totient is φ = 13564318985280.

The previous prime is 20346512616347. The next prime is 20346512616361. The reversal of 20346512616351 is 15361621564302.

It is a happy number.

20346512616351 is a `hidden beast` number, since 2 + 0 + 3 + 4 + 6 + 5 + 1 + 2 + 6 + 1 + 635 + 1 = 666.

It is not a de Polignac number, because 20346512616351 - 2² = 20346512616347 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20346512616297 and 20346512616306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20346512616361) 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, 5139111 + ... + 8191671.

Almost surely, 2^{20346512616351} is an apocalyptic number.

20346512616351 is a deficient number, since it is larger than the sum of its proper divisors (9042943807249).

20346512616351 is a wasteful number, since it uses less digits than its factorization.

20346512616351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3793166 (or 3793163 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 20346512616351 in words is "twenty trillion, three hundred forty-six billion, five hundred twelve million, six hundred sixteen thousand, three hundred fifty-one".