161264046480 has 40 divisors (see below), whose sum is σ = 499918544832. Its totient is φ = 43003745664.

The previous prime is 161264046479. The next prime is 161264046497. The reversal of 161264046480 is 84640462161.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335966524 + ... + 335967003.

Almost surely, 2^161264046480 is an apocalyptic number.

161264046480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161264046480 is an abundant number, since it is smaller than the sum of its proper divisors (338654498352).

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

161264046480 is a wasteful number, since it uses less digits than its factorization.

161264046480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671933543 (or 671933537 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 42.

The spelling of 161264046480 in words is "one hundred sixty-one billion, two hundred sixty-four million, forty-six thousand, four hundred eighty".