61162561565107 has 4 divisors (see below), whose sum is σ = 61192885097896. Its totient is φ = 61132238032320.

The previous prime is 61162561564991. The next prime is 61162561565173. The reversal of 61162561565107 is 70156516526116.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61162561565107 - 2²⁷ = 61162427347379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61162561563107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15161763369 + ... + 15161767402.

It is an arithmetic number, because the mean of its divisors is an integer number (15298221274474).

Almost surely, 2^{61162561565107} is an apocalyptic number.

61162561565107 is a deficient number, since it is larger than the sum of its proper divisors (30323532789).

61162561565107 is a wasteful number, since it uses less digits than its factorization.

61162561565107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30323532788.

The product of its (nonzero) digits is 2268000, while the sum is 52.

The spelling of 61162561565107 in words is "sixty-one trillion, one hundred sixty-two billion, five hundred sixty-one million, five hundred sixty-five thousand, one hundred seven".