16501055104 has 16 divisors (see below), whose sum is σ = 32873195970. Its totient is φ = 8250527488.

The previous prime is 16501055099. The next prime is 16501055111. The reversal of 16501055104 is 40155010561.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 9009806400 + 7491248704 = 94920^2 + 86552^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64457119 + ... + 64457374.

Almost surely, 2^16501055104 is an apocalyptic number.

It is an amenable number.

16501055104 is a deficient number, since it is larger than the sum of its proper divisors (16372140866).

16501055104 is an equidigital number, since it uses as much as digits as its factorization.

16501055104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128914507 (or 128914495 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 28.

Adding to 16501055104 its reverse (40155010561), we get a palindrome (56656065665).

The spelling of 16501055104 in words is "sixteen billion, five hundred one million, fifty-five thousand, one hundred four".