20346456623111 has 4 divisors (see below), whose sum is σ = 20356737805800. Its totient is φ = 20336175440424.

The previous prime is 20346456623093. The next prime is 20346456623117. The reversal of 20346456623111 is 11132665464302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20346456623111 is a prime.

It is a super-2 number, since 2×20346456623111² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20346456623117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5140588376 + ... + 5140592333.

It is an arithmetic number, because the mean of its divisors is an integer number (5089184451450).

Almost surely, 2^{20346456623111} is an apocalyptic number.

20346456623111 is a deficient number, since it is larger than the sum of its proper divisors (10281182689).

20346456623111 is a wasteful number, since it uses less digits than its factorization.

20346456623111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10281182688.

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 20346456623111 in words is "twenty trillion, three hundred forty-six billion, four hundred fifty-six million, six hundred twenty-three thousand, one hundred eleven".