155530044342442 has 32 divisors (see below), whose sum is σ = 290862236810880. Its totient is φ = 60595943009280.

The previous prime is 155530044342391. The next prime is 155530044342457. The reversal of 155530044342442 is 244243440035551.

It is a junction number, because it is equal to n+sod(n) for n = 155530044342392 and 155530044342401.

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 15 ways as a sum of consecutive naturals, for example, 59051034 + ... + 61628602.

It is an arithmetic number, because the mean of its divisors is an integer number (9089444900340).

Almost surely, 2^{155530044342442} is an apocalyptic number.

155530044342442 is a deficient number, since it is larger than the sum of its proper divisors (135332192468438).

155530044342442 is a wasteful number, since it uses less digits than its factorization.

155530044342442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2969406.

The product of its (nonzero) digits is 4608000, while the sum is 46.

Adding to 155530044342442 its reverse (244243440035551), we get a palindrome (399773484377993).

The spelling of 155530044342442 in words is "one hundred fifty-five trillion, five hundred thirty billion, forty-four million, three hundred forty-two thousand, four hundred forty-two".