155802642912 has 384 divisors, whose sum is σ = 541431475200. Its totient is φ = 42645657600.

The previous prime is 155802642859. The next prime is 155802642913. The reversal of 155802642912 is 219246208551.

155802642912 is a `hidden beast` number, since 1 + 5 + 580 + 2 + 64 + 2 + 9 + 1 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155802642913) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 22972962 + ... + 22979742.

It is an arithmetic number, because the mean of its divisors is an integer number (1409977800).

Almost surely, 2^155802642912 is an apocalyptic number.

155802642912 is a gapful number since it is divisible by the number (12) 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 155802642912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270715737600).

155802642912 is an abundant number, since it is smaller than the sum of its proper divisors (385628832288).

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

155802642912 is a wasteful number, since it uses less digits than its factorization.

155802642912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6967 (or 6953 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 155802642912 in words is "one hundred fifty-five billion, eight hundred two million, six hundred forty-two thousand, nine hundred twelve".