161155524442263 has 16 divisors (see below), whose sum is σ = 231955078346880. Its totient is φ = 98935941560544.

The previous prime is 161155524442189. The next prime is 161155524442277. The reversal of 161155524442263 is 362244425551161.

It is a happy number.

161155524442263 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 161155524442263 - 2⁸ = 161155524442007 is a prime.

It is a super-2 number, since 2×161155524442263² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161155524442763) 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, 4931001481 + ... + 4931034162.

It is an arithmetic number, because the mean of its divisors is an integer number (14497192396680).

Almost surely, 2^{161155524442263} is an apocalyptic number.

161155524442263 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

161155524442263 is a deficient number, since it is larger than the sum of its proper divisors (70799553904617).

161155524442263 is a wasteful number, since it uses less digits than its factorization.

161155524442263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9862036078.

The product of its digits is 6912000, while the sum is 51.

The spelling of 161155524442263 in words is "one hundred sixty-one trillion, one hundred fifty-five billion, five hundred twenty-four million, four hundred forty-two thousand, two hundred sixty-three".