155355403398144 has 132 divisors (see below), whose sum is σ = 416486390917896. Its totient is φ = 51485767958528.

The previous prime is 155355403398127. The next prime is 155355403398203. The reversal of 155355403398144 is 441893304553551.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91097032 + ... + 92786744.

Almost surely, 2^{155355403398144} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155355403398144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208243195458948).

155355403398144 is an abundant number, since it is smaller than the sum of its proper divisors (261130987519752).

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

155355403398144 is an equidigital number, since it uses as much as digits as its factorization.

155355403398144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1690082 (or 1689891 counting only the distinct ones).

The product of its (nonzero) digits is 77760000, while the sum is 60.

The spelling of 155355403398144 in words is "one hundred fifty-five trillion, three hundred fifty-five billion, four hundred three million, three hundred ninety-eight thousand, one hundred forty-four".