16556510001650 has 24 divisors (see below), whose sum is σ = 31094090249664. Its totient is φ = 6558306872400.

The previous prime is 16556510001641. The next prime is 16556510001719. The reversal of 16556510001650 is 5610001565561.

It is a junction number, because it is equal to n+sod(n) for n = 16556510001598 and 16556510001607.

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, 1607423006 + ... + 1607433305.

It is an arithmetic number, because the mean of its divisors is an integer number (1295587093736).

Almost surely, 2^{16556510001650} is an apocalyptic number.

16556510001650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16556510001650 is a deficient number, since it is larger than the sum of its proper divisors (14537580248014).

16556510001650 is a wasteful number, since it uses less digits than its factorization.

16556510001650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3214856426 (or 3214856421 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 41.

The spelling of 16556510001650 in words is "sixteen trillion, five hundred fifty-six billion, five hundred ten million, one thousand, six hundred fifty".