155949439712 has 192 divisors, whose sum is σ = 359526988800. Its totient is φ = 65836800000.

The previous prime is 155949439691. The next prime is 155949439721. The reversal of 155949439712 is 217934949551.

155949439712 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 207655337 + ... + 207656087.

It is an arithmetic number, because the mean of its divisors is an integer number (1872536400).

Almost surely, 2^155949439712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155949439712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179763494400).

155949439712 is an abundant number, since it is smaller than the sum of its proper divisors (203577549088).

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

155949439712 is a wasteful number, since it uses less digits than its factorization.

155949439712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1361 (or 1353 counting only the distinct ones).

The product of its digits is 12247200, while the sum is 59.

The spelling of 155949439712 in words is "one hundred fifty-five billion, nine hundred forty-nine million, four hundred thirty-nine thousand, seven hundred twelve".