155944050819012 has 72 divisors (see below), whose sum is σ = 401180556597912. Its totient is φ = 51062009587200.

The previous prime is 155944050818981. The next prime is 155944050819071. The reversal of 155944050819012 is 210918050449551.

155944050819012 is a `hidden beast` number, since 1 + 5 + 5 + 9 + 4 + 40 + 508 + 1 + 90 + 1 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 43717274505216 + 112226776313796 = 6611904^2 + 10593714^2 .

It is a super-2 number, since 2×155944050819012² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 155944050819012.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44986383 + ... + 48328694.

It is an arithmetic number, because the mean of its divisors is an integer number (5571952174971).

Almost surely, 2^{155944050819012} is an apocalyptic number.

155944050819012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

155944050819012 is an abundant number, since it is smaller than the sum of its proper divisors (245236505778900).

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

155944050819012 is a wasteful number, since it uses less digits than its factorization.

155944050819012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93315909 (or 93315904 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 54.

The spelling of 155944050819012 in words is "one hundred fifty-five trillion, nine hundred forty-four billion, fifty million, eight hundred nineteen thousand, twelve".