16087635561 has 16 divisors (see below), whose sum is σ = 21792456000. Its totient is φ = 10555189248.

The previous prime is 16087635547. The next prime is 16087635569. The reversal of 16087635561 is 16553678061.

It is not a de Polignac number, because 16087635561 - 2⁶ = 16087635497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16087635561.

It is not an unprimeable number, because it can be changed into a prime (16087635569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102336 + ... + 206513.

It is an arithmetic number, because the mean of its divisors is an integer number (1362028500).

Almost surely, 2^16087635561 is an apocalyptic number.

It is an amenable number.

16087635561 is a deficient number, since it is larger than the sum of its proper divisors (5704820439).

16087635561 is a wasteful number, since it uses less digits than its factorization.

16087635561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309128.

The product of its (nonzero) digits is 907200, while the sum is 48.

The spelling of 16087635561 in words is "sixteen billion, eighty-seven million, six hundred thirty-five thousand, five hundred sixty-one".