20344633055164 has 48 divisors (see below), whose sum is σ = 42912464829696. Its totient is φ = 8325169529600.

The previous prime is 20344633055081. The next prime is 20344633055191. The reversal of 20344633055164 is 46155033644302.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 591259042 + ... + 591293449.

It is an arithmetic number, because the mean of its divisors is an integer number (894009683952).

Almost surely, 2^{20344633055164} is an apocalyptic number.

It is an amenable number.

20344633055164 is an abundant number, since it is smaller than the sum of its proper divisors (22567831774532).

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

20344633055164 is a wasteful number, since it uses less digits than its factorization.

20344633055164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182552546 (or 1182552544 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 46.

Adding to 20344633055164 its reverse (46155033644302), we get a palindrome (66499666699466).

The spelling of 20344633055164 in words is "twenty trillion, three hundred forty-four billion, six hundred thirty-three million, fifty-five thousand, one hundred sixty-four".