155284778346 has 64 divisors (see below), whose sum is σ = 328270060800. Its totient is φ = 48873217536.

The previous prime is 155284778309. The next prime is 155284778351. The reversal of 155284778346 is 643877482551.

155284778346 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×155284778346³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 155284778346.

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 31 ways as a sum of consecutive naturals, for example, 4027110 + ... + 4065486.

It is an arithmetic number, because the mean of its divisors is an integer number (5129219700).

Almost surely, 2^155284778346 is an apocalyptic number.

155284778346 is an abundant number, since it is smaller than the sum of its proper divisors (172985282454).

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

155284778346 is a wasteful number, since it uses less digits than its factorization.

155284778346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38783.

The product of its digits is 45158400, while the sum is 60.

The spelling of 155284778346 in words is "one hundred fifty-five billion, two hundred eighty-four million, seven hundred seventy-eight thousand, three hundred forty-six".