16553540915 has 8 divisors (see below), whose sum is σ = 19865351088. Its totient is φ = 13242098080.

The previous prime is 16553540911. The next prime is 16553540929. The reversal of 16553540915 is 51904535561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16553540915 - 2² = 16553540911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16553540911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19604 + ... + 183006.

It is an arithmetic number, because the mean of its divisors is an integer number (2483168886).

Almost surely, 2^16553540915 is an apocalyptic number.

16553540915 is a deficient number, since it is larger than the sum of its proper divisors (3311810173).

16553540915 is a wasteful number, since it uses less digits than its factorization.

16553540915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183669.

The product of its (nonzero) digits is 405000, while the sum is 44.

The spelling of 16553540915 in words is "sixteen billion, five hundred fifty-three million, five hundred forty thousand, nine hundred fifteen".