16881681024 has 96 divisors (see below), whose sum is σ = 52315672500. Its totient is φ = 5194358784.

The previous prime is 16881681007. The next prime is 16881681043. The reversal of 16881681024 is 42018618861.

It can be written as a sum of positive squares in 2 ways, for example, as 16702977600 + 178703424 = 129240^2 + 13368^2 .

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-3 number, since 3×16881681024³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 548649 + ... + 578600.

Almost surely, 2^16881681024 is an apocalyptic number.

It is an amenable number.

16881681024 is an abundant number, since it is smaller than the sum of its proper divisors (35433991476).

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

16881681024 is a wasteful number, since it uses less digits than its factorization.

16881681024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1127282 (or 1127267 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 45.

The spelling of 16881681024 in words is "sixteen billion, eight hundred eighty-one million, six hundred eighty-one thousand, twenty-four".