155510620161 has 16 divisors (see below), whose sum is σ = 223886496960. Its totient is φ = 95446330560.

The previous prime is 155510620159. The next prime is 155510620183. The reversal of 155510620161 is 161026015551.

It is not a de Polignac number, because 155510620161 - 2¹ = 155510620159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155510620141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5245710 + ... + 5275271.

It is an arithmetic number, because the mean of its divisors is an integer number (13992906060).

Almost surely, 2^155510620161 is an apocalyptic number.

It is an amenable number.

155510620161 is a deficient number, since it is larger than the sum of its proper divisors (68375876799).

155510620161 is a wasteful number, since it uses less digits than its factorization.

155510620161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10521376.

The product of its (nonzero) digits is 9000, while the sum is 33.

The spelling of 155510620161 in words is "one hundred fifty-five billion, five hundred ten million, six hundred twenty thousand, one hundred sixty-one".