155212120162 has 16 divisors (see below), whose sum is σ = 255810693600. Its totient is φ = 70043401440.

The previous prime is 155212120111. The next prime is 155212120163. The reversal of 155212120162 is 261021212551.

It is a self number, because there is not a number n which added to its sum of digits gives 155212120162.

It is not an unprimeable number, because it can be changed into a prime (155212120163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25374987 + ... + 25381102.

It is an arithmetic number, because the mean of its divisors is an integer number (15988168350).

Almost surely, 2^155212120162 is an apocalyptic number.

155212120162 is a deficient number, since it is larger than the sum of its proper divisors (100598573438).

155212120162 is a wasteful number, since it uses less digits than its factorization.

155212120162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50756241.

The product of its (nonzero) digits is 2400, while the sum is 28.

The spelling of 155212120162 in words is "one hundred fifty-five billion, two hundred twelve million, one hundred twenty thousand, one hundred sixty-two".