161845269355 has 16 divisors (see below), whose sum is σ = 242137338624. Its totient is φ = 100890557280.

The previous prime is 161845269323. The next prime is 161845269359. The reversal of 161845269355 is 553962548161.

It is not a de Polignac number, because 161845269355 - 2⁵ = 161845269323 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161845269296 and 161845269305.

It is not an unprimeable number, because it can be changed into a prime (161845269359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 210188277 + ... + 210189046.

It is an arithmetic number, because the mean of its divisors is an integer number (15133583664).

Almost surely, 2^161845269355 is an apocalyptic number.

161845269355 is a deficient number, since it is larger than the sum of its proper divisors (80292069269).

161845269355 is a wasteful number, since it uses less digits than its factorization.

161845269355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420377346.

The product of its digits is 7776000, while the sum is 55.

The spelling of 161845269355 in words is "one hundred sixty-one billion, eight hundred forty-five million, two hundred sixty-nine thousand, three hundred fifty-five".