155151503431055 has 32 divisors (see below), whose sum is σ = 192007616125248. Its totient is φ = 120265344000000.

The previous prime is 155151503431049. The next prime is 155151503431091. The reversal of 155151503431055 is 550134305151551.

It is a happy number.

155151503431055 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 155151503431055 - 2⁴ = 155151503431039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155151503430997 and 155151503431015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 280795055 + ... + 281347055.

It is an arithmetic number, because the mean of its divisors is an integer number (6000238003914).

Almost surely, 2^{155151503431055} is an apocalyptic number.

155151503431055 is a deficient number, since it is larger than the sum of its proper divisors (36856112694193).

155151503431055 is a wasteful number, since it uses less digits than its factorization.

155151503431055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558347.

The product of its (nonzero) digits is 562500, while the sum is 44.

The spelling of 155151503431055 in words is "one hundred fifty-five trillion, one hundred fifty-one billion, five hundred three million, four hundred thirty-one thousand, fifty-five".