155685061573924 has 27 divisors (see below), whose sum is σ = 273469793002833. Its totient is φ = 77551920082800.

The previous prime is 155685061573903. The next prime is 155685061573969. The reversal of 155685061573924 is 429375160586551.

It is a happy number.

The square root of 155685061573924 is 12477382.

It is a perfect power (a square), and thus also a powerful number.

155685061573924 is digitally balanced in base 3, 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 only one way, i.e., 19892652573924 + 135792409000000 = 4460118^2 + 11653000^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 155685061573924.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6762729534 + ... + 6762752554.

It is a 1-persistent number, because it is pandigital, but 2⋅155685061573924 = 311370123147848 is not.

Almost surely, 2^{155685061573924} is an apocalyptic number.

155685061573924 is the 12477382-nd square number.

It is an amenable number.

155685061573924 is a deficient number, since it is larger than the sum of its proper divisors (117784731428909).

155685061573924 is an frugal number, since it uses more digits than its factorization.

155685061573924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46588 (or 23294 counting only the distinct ones).

The product of its (nonzero) digits is 272160000, while the sum is 67.

The spelling of 155685061573924 in words is "one hundred fifty-five trillion, six hundred eighty-five billion, sixty-one million, five hundred seventy-three thousand, nine hundred twenty-four".