61161064005 has 16 divisors (see below), whose sum is σ = 98210985984. Its totient is φ = 32501472960.

The previous prime is 61161063991. The next prime is 61161064007. The reversal of 61161064005 is 50046016116.

It is not a de Polignac number, because 61161064005 - 2⁶ = 61161063941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61161064007) 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, 7355781 + ... + 7364090.

It is an arithmetic number, because the mean of its divisors is an integer number (6138186624).

Almost surely, 2^61161064005 is an apocalyptic number.

It is an amenable number.

61161064005 is a deficient number, since it is larger than the sum of its proper divisors (37049921979).

61161064005 is a wasteful number, since it uses less digits than its factorization.

61161064005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14720156.

The product of its (nonzero) digits is 4320, while the sum is 30.

The spelling of 61161064005 in words is "sixty-one billion, one hundred sixty-one million, sixty-four thousand, five".