155544241555 has 16 divisors (see below), whose sum is σ = 189277935264. Its totient is φ = 122686721280.

The previous prime is 155544241547. The next prime is 155544241579. The reversal of 155544241555 is 555142445551.

It is not a de Polignac number, because 155544241555 - 2³ = 155544241547 is a prime.

It is a super-2 number, since 2×155544241555² (a number of 23 digits) contains 22 as substring.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 960400 + ... + 1110610.

It is an arithmetic number, because the mean of its divisors is an integer number (11829870954).

Almost surely, 2^155544241555 is an apocalyptic number.

155544241555 is a deficient number, since it is larger than the sum of its proper divisors (33733693709).

155544241555 is a wasteful number, since it uses less digits than its factorization.

155544241555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153126.

The product of its digits is 2000000, while the sum is 46.

The spelling of 155544241555 in words is "one hundred fifty-five billion, five hundred forty-four million, two hundred forty-one thousand, five hundred fifty-five".