155216616605 has 8 divisors (see below), whose sum is σ = 186347357664. Its totient is φ = 124115014800.

The previous prime is 155216616589. The next prime is 155216616619. The reversal of 155216616605 is 506616612551.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 155216616605 - 2⁴ = 155216616589 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7273091 + ... + 7294400.

It is an arithmetic number, because the mean of its divisors is an integer number (23293419708).

Almost surely, 2^155216616605 is an apocalyptic number.

It is an amenable number.

155216616605 is a deficient number, since it is larger than the sum of its proper divisors (31130741059).

155216616605 is a wasteful number, since it uses less digits than its factorization.

155216616605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14569627.

The product of its (nonzero) digits is 324000, while the sum is 44.

The spelling of 155216616605 in words is "one hundred fifty-five billion, two hundred sixteen million, six hundred sixteen thousand, six hundred five".