161266463259 has 16 divisors (see below), whose sum is σ = 236645241984. Its totient is φ = 96872316800.

The previous prime is 161266463201. The next prime is 161266463269. The reversal of 161266463259 is 952364662161.

161266463259 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 161266463259 - 2⁷ = 161266463131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161266463269) by changing a digit.

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, 21619557 + ... + 21627014.

It is an arithmetic number, because the mean of its divisors is an integer number (14790327624).

Almost surely, 2^161266463259 is an apocalyptic number.

161266463259 is a deficient number, since it is larger than the sum of its proper divisors (75378778725).

161266463259 is a wasteful number, since it uses less digits than its factorization.

161266463259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43246698.

The product of its digits is 2799360, while the sum is 51.

The spelling of 161266463259 in words is "one hundred sixty-one billion, two hundred sixty-six million, four hundred sixty-three thousand, two hundred fifty-nine".