161333401265 has 8 divisors (see below), whose sum is σ = 193757359488. Its totient is φ = 128961869040.

The previous prime is 161333401253. The next prime is 161333401283. The reversal of 161333401265 is 562104333161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 161333401265 - 2¹⁴ = 161333384881 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13099727 + ... + 13112036.

It is an arithmetic number, because the mean of its divisors is an integer number (24219669936).

Almost surely, 2^161333401265 is an apocalyptic number.

It is an amenable number.

161333401265 is a deficient number, since it is larger than the sum of its proper divisors (32423958223).

161333401265 is a wasteful number, since it uses less digits than its factorization.

161333401265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26212999.

The product of its (nonzero) digits is 38880, while the sum is 35.

The spelling of 161333401265 in words is "one hundred sixty-one billion, three hundred thirty-three million, four hundred one thousand, two hundred sixty-five".