16464506193856 has 56 divisors (see below), whose sum is σ = 38348314175456. Its totient is φ = 6865508367360.

The previous prime is 16464506193851. The next prime is 16464506193859. The reversal of 16464506193856 is 65839160546461.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16464506193851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 496620315 + ... + 496653466.

Almost surely, 2^{16464506193856} is an apocalyptic number.

16464506193856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16464506193856 is an abundant number, since it is smaller than the sum of its proper divisors (21883807981600).

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

16464506193856 is an equidigital number, since it uses as much as digits as its factorization.

16464506193856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993273837 (or 993273827 counting only the distinct ones).

The product of its (nonzero) digits is 111974400, while the sum is 64.

The spelling of 16464506193856 in words is "sixteen trillion, four hundred sixty-four billion, five hundred six million, one hundred ninety-three thousand, eight hundred fifty-six".