15616110550061 has 32 divisors (see below), whose sum is σ = 18264222832128. Its totient is φ = 13076700549120.

The previous prime is 15616110550031. The next prime is 15616110550081. The reversal of 15616110550061 is 16005501161651.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 15616110550061 - 2³⁰ = 15615036808237 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 15616110549997 and 15616110550024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15616110550031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21533591 + ... + 22246971.

It is an arithmetic number, because the mean of its divisors is an integer number (570756963504).

Almost surely, 2^{15616110550061} is an apocalyptic number.

It is an amenable number.

15616110550061 is a deficient number, since it is larger than the sum of its proper divisors (2648112282067).

15616110550061 is a wasteful number, since it uses less digits than its factorization.

15616110550061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713901.

The product of its (nonzero) digits is 27000, while the sum is 38.

The spelling of 15616110550061 in words is "fifteen trillion, six hundred sixteen billion, one hundred ten million, five hundred fifty thousand, sixty-one".