20346502144656 has 40 divisors (see below), whose sum is σ = 52564934869920. Its totient is φ = 6781762521856.

The previous prime is 20346502144643. The next prime is 20346502144721. The reversal of 20346502144656 is 65644120564302.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11838861 + ... + 13448108.

It is an arithmetic number, because the mean of its divisors is an integer number (1314123371748).

Almost surely, 2^{20346502144656} is an apocalyptic number.

It is an amenable number.

20346502144656 is an abundant number, since it is smaller than the sum of its proper divisors (32218432725264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20346502144656 is a wasteful number, since it uses less digits than its factorization.

20346502144656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25303743 (or 25303737 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 48.

The spelling of 20346502144656 in words is "twenty trillion, three hundred forty-six billion, five hundred two million, one hundred forty-four thousand, six hundred fifty-six".