161333401264 has 20 divisors (see below), whose sum is σ = 357238245904. Its totient is φ = 69142886208.

The previous prime is 161333401253. The next prime is 161333401283. The reversal of 161333401264 is 462104333161.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 720238287 + ... + 720238510.

Almost surely, 2^161333401264 is an apocalyptic number.

161333401264 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

161333401264 is an abundant number, since it is smaller than the sum of its proper divisors (195904844640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161333401264 is a wasteful number, since it uses less digits than its factorization.

161333401264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1440476812 (or 1440476806 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 34.

The spelling of 161333401264 in words is "one hundred sixty-one billion, three hundred thirty-three million, four hundred one thousand, two hundred sixty-four".