155253054012 has 192 divisors, whose sum is σ = 423163453440. Its totient is φ = 43391759616.

The previous prime is 155253054007. The next prime is 155253054059. The reversal of 155253054012 is 210450352551.

It is a super-2 number, since 2×155253054012² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 399107914 + ... + 399108302.

It is an arithmetic number, because the mean of its divisors is an integer number (2203976320).

Almost surely, 2^155253054012 is an apocalyptic number.

155253054012 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 155253054012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211581726720).

155253054012 is an abundant number, since it is smaller than the sum of its proper divisors (267910399428).

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

155253054012 is a wasteful number, since it uses less digits than its factorization.

155253054012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952 (or 950 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 33.

The spelling of 155253054012 in words is "one hundred fifty-five billion, two hundred fifty-three million, fifty-four thousand, twelve".