16464413193040 has 20 divisors (see below), whose sum is σ = 38279760674004. Its totient is φ = 6585765277184.

The previous prime is 16464413193023. The next prime is 16464413193091. The reversal of 16464413193040 is 4039131446461.

It can be written as a sum of positive squares in 2 ways, for example, as 4434781115664 + 12029632077376 = 2105892^2 + 3468376^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×16464413193040² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102902582377 + ... + 102902582536.

Almost surely, 2^{16464413193040} is an apocalyptic number.

16464413193040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16464413193040 is an abundant number, since it is smaller than the sum of its proper divisors (21815347480964).

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

16464413193040 is a wasteful number, since it uses less digits than its factorization.

16464413193040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205805164926 (or 205805164920 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 46.

The spelling of 16464413193040 in words is "sixteen trillion, four hundred sixty-four billion, four hundred thirteen million, one hundred ninety-three thousand, forty".