155209382478143 has 16 divisors (see below), whose sum is σ = 182372053478400. Its totient is φ = 129332181176736.

The previous prime is 155209382478133. The next prime is 155209382478167. The reversal of 155209382478143 is 341874283902551.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 155209382478143 - 2¹⁴ = 155209382461759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155209382478133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1583041721 + ... + 1583139762.

It is an arithmetic number, because the mean of its divisors is an integer number (11398253342400).

Almost surely, 2^{155209382478143} is an apocalyptic number.

155209382478143 is a deficient number, since it is larger than the sum of its proper divisors (27162671000257).

155209382478143 is a wasteful number, since it uses less digits than its factorization.

155209382478143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3166181686.

The product of its (nonzero) digits is 58060800, while the sum is 62.

The spelling of 155209382478143 in words is "one hundred fifty-five trillion, two hundred nine billion, three hundred eighty-two million, four hundred seventy-eight thousand, one hundred forty-three".