155016506500 has 96 divisors (see below), whose sum is σ = 360380966400. Its totient is φ = 58082745600.

The previous prime is 155016506389. The next prime is 155016506503. The reversal of 155016506500 is 5605610551.

It is not an unprimeable number, because it can be changed into a prime (155016506503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 753829 + ... + 937171.

It is an arithmetic number, because the mean of its divisors is an integer number (3753968400).

Almost surely, 2^155016506500 is an apocalyptic number.

155016506500 is a gapful number since it is divisible by the number (10) 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 155016506500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180190483200).

155016506500 is an abundant number, since it is smaller than the sum of its proper divisors (205364459900).

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

155016506500 is a wasteful number, since it uses less digits than its factorization.

155016506500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183470 (or 183458 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 34.

The spelling of 155016506500 in words is "one hundred fifty-five billion, sixteen million, five hundred six thousand, five hundred".