20345154555118 has 4 divisors (see below), whose sum is σ = 30517731832680. Its totient is φ = 10172577277558.

The previous prime is 20345154555083. The next prime is 20345154555119. The reversal of 20345154555118 is 81155545154302.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20345154555119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5086288638778 + ... + 5086288638781.

It is an arithmetic number, because the mean of its divisors is an integer number (7629432958170).

Almost surely, 2^{20345154555118} is an apocalyptic number.

20345154555118 is a deficient number, since it is larger than the sum of its proper divisors (10172577277562).

20345154555118 is a wasteful number, since it uses less digits than its factorization.

20345154555118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10172577277561.

The product of its (nonzero) digits is 2400000, while the sum is 49.

The spelling of 20345154555118 in words is "twenty trillion, three hundred forty-five billion, one hundred fifty-four million, five hundred fifty-five thousand, one hundred eighteen".