155236233661161 has 32 divisors (see below), whose sum is σ = 209042627644800. Its totient is φ = 102464855268864.

The previous prime is 155236233661079. The next prime is 155236233661261. The reversal of 155236233661161 is 161166332632551.

It is not a de Polignac number, because 155236233661161 - 2⁹ = 155236233660649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155236233661261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2730936406 + ... + 2730993248.

It is an arithmetic number, because the mean of its divisors is an integer number (6532582113900).

Almost surely, 2^{155236233661161} is an apocalyptic number.

It is an amenable number.

155236233661161 is a deficient number, since it is larger than the sum of its proper divisors (53806393983639).

155236233661161 is a wasteful number, since it uses less digits than its factorization.

155236233661161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76585.

The product of its digits is 3499200, while the sum is 51.

The spelling of 155236233661161 in words is "one hundred fifty-five trillion, two hundred thirty-six billion, two hundred thirty-three million, six hundred sixty-one thousand, one hundred sixty-one".