155723582112 has 144 divisors (see below), whose sum is σ = 475689140640. Its totient is φ = 44475981312.

The previous prime is 155723582111. The next prime is 155723582137. The reversal of 155723582112 is 211285327551.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (155723582111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18901258 + ... + 18909494.

It is an arithmetic number, because the mean of its divisors is an integer number (3303396810).

Almost surely, 2^155723582112 is an apocalyptic number.

155723582112 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 155723582112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237844570320).

155723582112 is an abundant number, since it is smaller than the sum of its proper divisors (319965558528).

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

155723582112 is a wasteful number, since it uses less digits than its factorization.

155723582112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12283 (or 12268 counting only the distinct ones).

The product of its digits is 168000, while the sum is 42.

The spelling of 155723582112 in words is "one hundred fifty-five billion, seven hundred twenty-three million, five hundred eighty-two thousand, one hundred twelve".