155105450544 has 320 divisors, whose sum is σ = 476222519808. Its totient is φ = 42974822400.

The previous prime is 155105450471. The next prime is 155105450569. The reversal of 155105450544 is 445054501551.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 45443782 + ... + 45447194.

Almost surely, 2^155105450544 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 155105450544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238111259904).

155105450544 is an abundant number, since it is smaller than the sum of its proper divisors (321117069264).

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

155105450544 is a wasteful number, since it uses less digits than its factorization.

155105450544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3596 (or 3590 counting only the distinct ones).

The product of its (nonzero) digits is 200000, while the sum is 39.

The spelling of 155105450544 in words is "one hundred fifty-five billion, one hundred five million, four hundred fifty thousand, five hundred forty-four".