20346502213351 has 8 divisors (see below), whose sum is σ = 20561489245440. Its totient is φ = 20131975048248.

The previous prime is 20346502213321. The next prime is 20346502213357. The reversal of 20346502213351 is 15331220564302.

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 20346502213351 - 2²¹ = 20346500116199 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20346502213351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20346502213357) 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, 114877791 + ... + 115054768.

It is an arithmetic number, because the mean of its divisors is an integer number (2570186155680).

Almost surely, 2^{20346502213351} is an apocalyptic number.

20346502213351 is a deficient number, since it is larger than the sum of its proper divisors (214987032089).

20346502213351 is a wasteful number, since it uses less digits than its factorization.

20346502213351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229933493.

The product of its (nonzero) digits is 129600, while the sum is 37.

Adding to 20346502213351 its reverse (15331220564302), we get a palindrome (35677722777653).

The spelling of 20346502213351 in words is "twenty trillion, three hundred forty-six billion, five hundred two million, two hundred thirteen thousand, three hundred fifty-one".