155105616165 has 16 divisors (see below), whose sum is σ = 248173867968. Its totient is φ = 82721367936.

The previous prime is 155105616151. The next prime is 155105616217. The reversal of 155105616165 is 561616501551.

It is not a de Polignac number, because 155105616165 - 2⁸ = 155105615909 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1441734 + ... + 1545576.

It is an arithmetic number, because the mean of its divisors is an integer number (15510866748).

Almost surely, 2^155105616165 is an apocalyptic number.

155105616165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155105616165 is a deficient number, since it is larger than the sum of its proper divisors (93068251803).

155105616165 is a wasteful number, since it uses less digits than its factorization.

155105616165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203428.

The product of its (nonzero) digits is 135000, while the sum is 42.

The spelling of 155105616165 in words is "one hundred fifty-five billion, one hundred five million, six hundred sixteen thousand, one hundred sixty-five".