155216323873 has 16 divisors (see below), whose sum is σ = 168043075200. Its totient is φ = 142516699776.

The previous prime is 155216323831. The next prime is 155216323891. The reversal of 155216323873 is 378323612551.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 155216323873 - 2²¹ = 155214226721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155216333873) 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, 13309461 + ... + 13321117.

It is an arithmetic number, because the mean of its divisors is an integer number (10502692200).

Almost surely, 2^155216323873 is an apocalyptic number.

155216323873 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

155216323873 is a deficient number, since it is larger than the sum of its proper divisors (12826751327).

155216323873 is a wasteful number, since it uses less digits than its factorization.

155216323873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17016.

The product of its digits is 907200, while the sum is 46.

The spelling of 155216323873 in words is "one hundred fifty-five billion, two hundred sixteen million, three hundred twenty-three thousand, eight hundred seventy-three".