18550572374016 has 576 divisors, whose sum is σ = 57409169126400. Its totient is φ = 5770382671872.

The previous prime is 18550572373939. The next prime is 18550572374027. The reversal of 18550572374016 is 61047327505581.

18550572374016 is a `hidden beast` number, since 1 + 8 + 5 + 50 + 572 + 3 + 7 + 4 + 0 + 16 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

It is a super-2 number, since 2×18550572374016² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 11500664026 + ... + 11500665638.

It is an arithmetic number, because the mean of its divisors is an integer number (99668696400).

Almost surely, 2^{18550572374016} is an apocalyptic number.

18550572374016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18550572374016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28704584563200).

18550572374016 is an abundant number, since it is smaller than the sum of its proper divisors (38858596752384).

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

18550572374016 is a wasteful number, since it uses less digits than its factorization.

18550572374016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1819 (or 1762 counting only the distinct ones).

The product of its (nonzero) digits is 7056000, while the sum is 54.

Adding to 18550572374016 its reverse (61047327505581), we get a palindrome (79597899879597).

The spelling of 18550572374016 in words is "eighteen trillion, five hundred fifty billion, five hundred seventy-two million, three hundred seventy-four thousand, sixteen".