20345154555104 has 48 divisors (see below), whose sum is σ = 40973480831808. Its totient is φ = 9939897349632.

The previous prime is 20345154555083. The next prime is 20345154555119. The reversal of 20345154555104 is 40155545154302.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10111787 + ... + 11955690.

It is an arithmetic number, because the mean of its divisors is an integer number (853614183996).

Almost surely, 2^{20345154555104} is an apocalyptic number.

It is an amenable number.

20345154555104 is an abundant number, since it is smaller than the sum of its proper divisors (20628326276704).

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

20345154555104 is a wasteful number, since it uses less digits than its factorization.

20345154555104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22068147 (or 22068139 counting only the distinct ones).

The product of its (nonzero) digits is 1200000, while the sum is 44.

The spelling of 20345154555104 in words is "twenty trillion, three hundred forty-five billion, one hundred fifty-four million, five hundred fifty-five thousand, one hundred four".