155555321005553 has 8 divisors (see below), whose sum is σ = 187134220758720. Its totient is φ = 126315599011920.

The previous prime is 155555321005541. The next prime is 155555321005561. The reversal of 155555321005553 is 355500123555551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 155555321005553 - 2⁴ = 155555321005537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155555321005753) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 584794439738 + ... + 584794440003.

It is an arithmetic number, because the mean of its divisors is an integer number (23391777594840).

Almost surely, 2^{155555321005553} is an apocalyptic number.

It is an amenable number.

155555321005553 is a deficient number, since it is larger than the sum of its proper divisors (31578899753167).

155555321005553 is a wasteful number, since it uses less digits than its factorization.

155555321005553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169588879767.

The product of its (nonzero) digits is 7031250, while the sum is 50.

The spelling of 155555321005553 in words is "one hundred fifty-five trillion, five hundred fifty-five billion, three hundred twenty-one million, five thousand, five hundred fifty-three".