155105616061 has 16 divisors (see below), whose sum is σ = 170586000000. Its totient is φ = 139857928000.

The previous prime is 155105616013. The next prime is 155105616067. The reversal of 155105616061 is 160616501551.

It is a cyclic number.

It is not a de Polignac number, because 155105616061 - 2¹⁵ = 155105583293 is a prime.

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 155105616061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155105616067) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1081440 + ... + 1216438.

It is an arithmetic number, because the mean of its divisors is an integer number (10661625000).

Almost surely, 2^155105616061 is an apocalyptic number.

155105616061 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

155105616061 is a deficient number, since it is larger than the sum of its proper divisors (15480383939).

155105616061 is a wasteful number, since it uses less digits than its factorization.

155105616061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135860.

The product of its (nonzero) digits is 27000, while the sum is 37.

The spelling of 155105616061 in words is "one hundred fifty-five billion, one hundred five million, six hundred sixteen thousand, sixty-one".