165964454460 has 72 divisors (see below), whose sum is σ = 575343446496. Its totient is φ = 37934732160.

The previous prime is 165964454401. The next prime is 165964454471. The reversal of 165964454460 is 64454469561.

165964454460 is a `hidden beast` number, since 1 + 6 + 5 + 96 + 4 + 4 + 544 + 6 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 165964454397 and 165964454406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65857651 + ... + 65860170.

Almost surely, 2^165964454460 is an apocalyptic number.

165964454460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165964454460 is an abundant number, since it is smaller than the sum of its proper divisors (409378992036).

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

165964454460 is a wasteful number, since it uses less digits than its factorization.

165964454460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131717843 (or 131717838 counting only the distinct ones).

The product of its (nonzero) digits is 12441600, while the sum is 54.

The spelling of 165964454460 in words is "one hundred sixty-five billion, nine hundred sixty-four million, four hundred fifty-four thousand, four hundred sixty".