155513300444 has 12 divisors (see below), whose sum is σ = 272476566600. Its totient is φ = 77662852848.

The previous prime is 155513300419. The next prime is 155513300473. The reversal of 155513300444 is 444003315551.

It is a super-2 number, since 2×155513300444² (a number of 23 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 3 ways as a sum of consecutive naturals, for example, 23445614 + ... + 23452245.

It is an arithmetic number, because the mean of its divisors is an integer number (22706380550).

Almost surely, 2^155513300444 is an apocalyptic number.

It is an amenable number.

155513300444 is a deficient number, since it is larger than the sum of its proper divisors (116963266156).

155513300444 is a wasteful number, since it uses less digits than its factorization.

155513300444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46898692 (or 46898690 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

Adding to 155513300444 its reverse (444003315551), we get a palindrome (599516615995).

The spelling of 155513300444 in words is "one hundred fifty-five billion, five hundred thirteen million, three hundred thousand, four hundred forty-four".