155249226880 has 384 divisors, whose sum is σ = 422672904000. Its totient is φ = 54063144960.

The previous prime is 155249226829. The next prime is 155249226883. The reversal of 155249226880 is 88622942551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155249226883) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 1041941046 + ... + 1041941194.

Almost surely, 2^155249226880 is an apocalyptic number.

155249226880 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 155249226880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211336452000).

155249226880 is an abundant number, since it is smaller than the sum of its proper divisors (267423677120).

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

155249226880 is a wasteful number, since it uses less digits than its factorization.

155249226880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340 (or 281 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 52.

The spelling of 155249226880 in words is "one hundred fifty-five billion, two hundred forty-nine million, two hundred twenty-six thousand, eight hundred eighty".