161651050110555 has 16 divisors (see below), whose sum is σ = 258681773601024. Its totient is φ = 86200528917600.

The previous prime is 161651050110553. The next prime is 161651050110647. The reversal of 161651050110555 is 555011050156161.

161651050110555 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 161651050110555 - 2¹ = 161651050110553 is a prime.

It is a super-2 number, since 2×161651050110555² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161651050110553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 835179679 + ... + 835373208.

It is an arithmetic number, because the mean of its divisors is an integer number (16167610850064).

Almost surely, 2^{161651050110555} is an apocalyptic number.

161651050110555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161651050110555 is a deficient number, since it is larger than the sum of its proper divisors (97030723490469).

161651050110555 is a wasteful number, since it uses less digits than its factorization.

161651050110555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1670559346.

The product of its (nonzero) digits is 112500, while the sum is 42.

The spelling of 161651050110555 in words is "one hundred sixty-one trillion, six hundred fifty-one billion, fifty million, one hundred ten thousand, five hundred fifty-five".