155543427742 has 8 divisors (see below), whose sum is σ = 233331272496. Its totient is φ = 77766336912.

The previous prime is 155543427727. The next prime is 155543427761. The reversal of 155543427742 is 247724345551.

It is a happy number.

155543427742 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 2652223 + ... + 2710234.

It is an arithmetic number, because the mean of its divisors is an integer number (29166409062).

Almost surely, 2^155543427742 is an apocalyptic number.

155543427742 is a deficient number, since it is larger than the sum of its proper divisors (77787844754).

155543427742 is a wasteful number, since it uses less digits than its factorization.

155543427742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5376962.

The product of its digits is 4704000, while the sum is 49.

The spelling of 155543427742 in words is "one hundred fifty-five billion, five hundred forty-three million, four hundred twenty-seven thousand, seven hundred forty-two".