61165650649 has 8 divisors (see below), whose sum is σ = 64494591840. Its totient is φ = 57847679136.

The previous prime is 61165650583. The next prime is 61165650673. The reversal of 61165650649 is 94605656116.

It is a happy number.

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 61165650649 - 2⁷ = 61165650521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61165651649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2730964 + ... + 2753269.

It is an arithmetic number, because the mean of its divisors is an integer number (8061823980).

Almost surely, 2^61165650649 is an apocalyptic number.

It is an amenable number.

61165650649 is a deficient number, since it is larger than the sum of its proper divisors (3328941191).

61165650649 is a wasteful number, since it uses less digits than its factorization.

61165650649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5484839.

The product of its (nonzero) digits is 1166400, while the sum is 49.

The spelling of 61165650649 in words is "sixty-one billion, one hundred sixty-five million, six hundred fifty thousand, six hundred forty-nine".