155017036144 has 80 divisors (see below), whose sum is σ = 317982862080. Its totient is φ = 73005166080.

The previous prime is 155017036133. The next prime is 155017036183. The reversal of 155017036144 is 441630710551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67076749 + ... + 67079059.

It is an arithmetic number, because the mean of its divisors is an integer number (3974785776).

Almost surely, 2^155017036144 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 155017036144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158991431040).

155017036144 is an abundant number, since it is smaller than the sum of its proper divisors (162965825936).

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

155017036144 is a wasteful number, since it uses less digits than its factorization.

155017036144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3518 (or 3512 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 37.

Adding to 155017036144 its reverse (441630710551), we get a palindrome (596647746695).

The spelling of 155017036144 in words is "one hundred fifty-five billion, seventeen million, thirty-six thousand, one hundred forty-four".