155490248052 has 108 divisors (see below), whose sum is σ = 413051795520. Its totient is φ = 51138043632.

The previous prime is 155490248027. The next prime is 155490248093. The reversal of 155490248052 is 250842094551.

155490248052 is a `hidden beast` number, since 1 + 5 + 549 + 0 + 24 + 80 + 5 + 2 = 666.

155490248052 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (108).

It is a junction number, because it is equal to n+sod(n) for n = 155490247989 and 155490248007.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 109268613 + ... + 109270035.

Almost surely, 2^155490248052 is an apocalyptic number.

155490248052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155490248052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206525897760).

155490248052 is an abundant number, since it is smaller than the sum of its proper divisors (257561547468).

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

155490248052 is an frugal number, since it uses more digits than its factorization.

155490248052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2944 (or 1507 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 45.

The spelling of 155490248052 in words is "one hundred fifty-five billion, four hundred ninety million, two hundred forty-eight thousand, fifty-two".