16650666610650 has 96 divisors (see below), whose sum is σ = 47876699445120. Its totient is φ = 4247126547840.

The previous prime is 16650666610637. The next prime is 16650666610651. The reversal of 16650666610650 is 5601666605661.

16650666610650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (16650666610651) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 268095627 + ... + 268157726.

It is an arithmetic number, because the mean of its divisors is an integer number (498715619220).

Almost surely, 2^{16650666610650} is an apocalyptic number.

16650666610650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16650666610650 is an abundant number, since it is smaller than the sum of its proper divisors (31226032834470).

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

16650666610650 is a wasteful number, since it uses less digits than its factorization.

16650666610650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536253397 (or 536253386 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 54.

The spelling of 16650666610650 in words is "sixteen trillion, six hundred fifty billion, six hundred sixty-six million, six hundred ten thousand, six hundred fifty".