16651086976 has 32 divisors (see below), whose sum is σ = 33465674700. Its totient is φ = 8251858944.

The previous prime is 16651086953. The next prime is 16651087051. The reversal of 16651086976 is 67968015661.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16641000000 + 10086976 = 129000^2 + 3176^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 561141 + ... + 590068.

Almost surely, 2^16651086976 is an apocalyptic number.

16651086976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16651086976 is an abundant number, since it is smaller than the sum of its proper divisors (16814587724).

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

16651086976 is a wasteful number, since it uses less digits than its factorization.

16651086976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151336 (or 1151324 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 55.

The spelling of 16651086976 in words is "sixteen billion, six hundred fifty-one million, eighty-six thousand, nine hundred seventy-six".