155318979828 has 24 divisors (see below), whose sum is σ = 362960912160. Its totient is φ = 51694427680.

The previous prime is 155318979773. The next prime is 155318979833. The reversal of 155318979828 is 828979813551.

155318979828 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 7 ways as a sum of consecutive naturals, for example, 9812463 + ... + 9828278.

It is an arithmetic number, because the mean of its divisors is an integer number (15123371340).

Almost surely, 2^155318979828 is an apocalyptic number.

It is an amenable number.

155318979828 is an abundant number, since it is smaller than the sum of its proper divisors (207641932332).

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

155318979828 is a wasteful number, since it uses less digits than its factorization.

155318979828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19641407 (or 19641405 counting only the distinct ones).

The product of its digits is 43545600, while the sum is 66.

The spelling of 155318979828 in words is "one hundred fifty-five billion, three hundred eighteen million, nine hundred seventy-nine thousand, eight hundred twenty-eight".