16666312098402 has 24 divisors (see below), whose sum is σ = 38234480697036. Its totient is φ = 5228646932736.

The previous prime is 16666312098383. The next prime is 16666312098409. The reversal of 16666312098402 is 20489021366661.

It can be written as a sum of positive squares in 2 ways, for example, as 16595593865361 + 70718233041 = 4073769^2 + 265929^2 .

It is a super-2 number, since 2×16666312098402² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16666312098409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27232535803 + ... + 27232536414.

Almost surely, 2^{16666312098402} is an apocalyptic number.

16666312098402 is an abundant number, since it is smaller than the sum of its proper divisors (21568168598634).

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

16666312098402 is a wasteful number, since it uses less digits than its factorization.

16666312098402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54465072242 (or 54465072239 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 54.

The spelling of 16666312098402 in words is "sixteen trillion, six hundred sixty-six billion, three hundred twelve million, ninety-eight thousand, four hundred two".