155661123035 has 16 divisors (see below), whose sum is σ = 203823164160. Its totient is φ = 113181087840.

The previous prime is 155661123001. The next prime is 155661123041. The reversal of 155661123035 is 530321166551.

155661123035 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 155661123035 - 2²⁰ = 155660074459 is a prime.

It is a super-2 number, since 2×155661123035² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 155661123035.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103367 + ... + 567456.

It is an arithmetic number, because the mean of its divisors is an integer number (12738947760).

Almost surely, 2^155661123035 is an apocalyptic number.

155661123035 is a deficient number, since it is larger than the sum of its proper divisors (48162041125).

155661123035 is a wasteful number, since it uses less digits than its factorization.

155661123035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675058.

The product of its (nonzero) digits is 81000, while the sum is 38.

Adding to 155661123035 its reverse (530321166551), we get a palindrome (685982289586).

The spelling of 155661123035 in words is "one hundred fifty-five billion, six hundred sixty-one million, one hundred twenty-three thousand, thirty-five".