10016561015999 has 8 divisors (see below), whose sum is σ = 10349292916512. Its totient is φ = 9689152826080.

The previous prime is 10016561015957. The next prime is 10016561016001. The reversal of 10016561015999 is 99951016561001.

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

It is a cyclic number.

It is not a de Polignac number, because 10016561015999 - 2²⁰ = 10016559967423 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10016561015999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10016561015299) 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, 1330923824 + ... + 1330931349.

It is an arithmetic number, because the mean of its divisors is an integer number (1293661614564).

Almost surely, 2^{10016561015999} is an apocalyptic number.

10016561015999 is a deficient number, since it is larger than the sum of its proper divisors (332731900513).

10016561015999 is an equidigital number, since it uses as much as digits as its factorization.

10016561015999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2661855297.

The product of its (nonzero) digits is 656100, while the sum is 53.

The spelling of 10016561015999 in words is "ten trillion, sixteen billion, five hundred sixty-one million, fifteen thousand, nine hundred ninety-nine".