155444540022 has 64 divisors (see below), whose sum is σ = 347311224000. Its totient is φ = 51533501184.

The previous prime is 155444539961. The next prime is 155444540051. The reversal of 155444540022 is 220045444551.

155444540022 is a `hidden beast` number, since 1 + 5 + 54 + 44 + 540 + 0 + 22 = 666.

155444540022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12520554 + ... + 12532962.

It is an arithmetic number, because the mean of its divisors is an integer number (5426737875).

Almost surely, 2^155444540022 is an apocalyptic number.

155444540022 is an abundant number, since it is smaller than the sum of its proper divisors (191866683978).

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

155444540022 is a wasteful number, since it uses less digits than its factorization.

155444540022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13662 (or 13656 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 36.

Adding to 155444540022 its reverse (220045444551), we get a palindrome (375489984573).

The spelling of 155444540022 in words is "one hundred fifty-five billion, four hundred forty-four million, five hundred forty thousand, twenty-two".