155844885478 has 16 divisors (see below), whose sum is σ = 243950766336. Its totient is φ = 74528509000.

The previous prime is 155844885473. The next prime is 155844885557. The reversal of 155844885478 is 874588448551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155844885473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 470103 + ... + 729853.

It is an arithmetic number, because the mean of its divisors is an integer number (15246922896).

Almost surely, 2^155844885478 is an apocalyptic number.

155844885478 is a deficient number, since it is larger than the sum of its proper divisors (88105880858).

155844885478 is a wasteful number, since it uses less digits than its factorization.

155844885478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272819.

The product of its digits is 229376000, while the sum is 67.

The spelling of 155844885478 in words is "one hundred fifty-five billion, eight hundred forty-four million, eight hundred eighty-five thousand, four hundred seventy-eight".