155542350168 has 112 divisors (see below), whose sum is σ = 441351170280. Its totient is φ = 51362688384.

The previous prime is 155542350127. The next prime is 155542350233. The reversal of 155542350168 is 861053245551.

155542350168 is a `hidden beast` number, since 1 + 5 + 554 + 2 + 35 + 0 + 1 + 68 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 499396 + ... + 748652.

Almost surely, 2^155542350168 is an apocalyptic number.

155542350168 is a gapful number since it is divisible by the number (18) 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 155542350168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220675585140).

155542350168 is an abundant number, since it is smaller than the sum of its proper divisors (285808820112).

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

155542350168 is a wasteful number, since it uses less digits than its factorization.

155542350168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249388 (or 249369 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 45.

The spelling of 155542350168 in words is "one hundred fifty-five billion, five hundred forty-two million, three hundred fifty thousand, one hundred sixty-eight".