155816211364 has 36 divisors (see below), whose sum is σ = 317351508012. Its totient is φ = 66659338240.

The previous prime is 155816211329. The next prime is 155816211367. The reversal of 155816211364 is 463112618551.

It is a happy number.

155816211364 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 92694673764 + 63121537600 = 304458^2 + 251240^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 155816211364.

It is not an unprimeable number, because it can be changed into a prime (155816211367) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 9460429 + ... + 9476884.

It is an arithmetic number, because the mean of its divisors is an integer number (8815319667).

Almost surely, 2^155816211364 is an apocalyptic number.

It is an amenable number.

155816211364 is an abundant number, since it is smaller than the sum of its proper divisors (161535296648).

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

155816211364 is a wasteful number, since it uses less digits than its factorization.

155816211364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18937356 (or 18937343 counting only the distinct ones).

The product of its digits is 172800, while the sum is 43.

The spelling of 155816211364 in words is "one hundred fifty-five billion, eight hundred sixteen million, two hundred eleven thousand, three hundred sixty-four".