155006227506 has 64 divisors (see below), whose sum is σ = 341019237888. Its totient is φ = 46675968768.

The previous prime is 155006227487. The next prime is 155006227529. The reversal of 155006227506 is 605722600551.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1593975 + ... + 1688421.

It is an arithmetic number, because the mean of its divisors is an integer number (5328425592).

Almost surely, 2^155006227506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155006227506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170509618944).

155006227506 is an abundant number, since it is smaller than the sum of its proper divisors (186013010382).

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

155006227506 is a wasteful number, since it uses less digits than its factorization.

155006227506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94915.

The product of its (nonzero) digits is 126000, while the sum is 39.

The spelling of 155006227506 in words is "one hundred fifty-five billion, six million, two hundred twenty-seven thousand, five hundred six".