155867249226 has 64 divisors (see below), whose sum is σ = 339531671808. Its totient is φ = 47414827008.

The previous prime is 155867249179. The next prime is 155867249233. The reversal of 155867249226 is 622942768551.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7532971 + ... + 7553633.

It is an arithmetic number, because the mean of its divisors is an integer number (5305182372).

Almost surely, 2^155867249226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155867249226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169765835904).

155867249226 is an abundant number, since it is smaller than the sum of its proper divisors (183664422582).

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

155867249226 is a wasteful number, since it uses less digits than its factorization.

155867249226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21775.

The product of its digits is 14515200, while the sum is 57.

The spelling of 155867249226 in words is "one hundred fifty-five billion, eight hundred sixty-seven million, two hundred forty-nine thousand, two hundred twenty-six".