155440311440332 has 12 divisors (see below), whose sum is σ = 272071380517776. Its totient is φ = 77705631292400.

The previous prime is 155440311440329. The next prime is 155440311440333. The reversal of 155440311440332 is 233044113044551.

It is not an unprimeable number, because it can be changed into a prime (155440311440333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3631082863 + ... + 3631125670.

It is an arithmetic number, because the mean of its divisors is an integer number (22672615043148).

Almost surely, 2^{155440311440332} is an apocalyptic number.

It is an amenable number.

155440311440332 is a deficient number, since it is larger than the sum of its proper divisors (116631069077444).

155440311440332 is a wasteful number, since it uses less digits than its factorization.

155440311440332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7262213888 (or 7262213886 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 40.

Adding to 155440311440332 its reverse (233044113044551), we get a palindrome (388484424484883).

The spelling of 155440311440332 in words is "one hundred fifty-five trillion, four hundred forty billion, three hundred eleven million, four hundred forty thousand, three hundred thirty-two".