61995008065 has 16 divisors (see below), whose sum is σ = 74577679488. Its totient is φ = 49473680256.

The previous prime is 61995008063. The next prime is 61995008081. The reversal of 61995008065 is 56080059916.

It is a cyclic number.

It is not a de Polignac number, because 61995008065 - 2¹ = 61995008063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61995008063) 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, 4870149 + ... + 4882861.

It is an arithmetic number, because the mean of its divisors is an integer number (4661104968).

Almost surely, 2^61995008065 is an apocalyptic number.

It is an amenable number.

61995008065 is a deficient number, since it is larger than the sum of its proper divisors (12582671423).

61995008065 is a wasteful number, since it uses less digits than its factorization.

61995008065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15048.

The product of its (nonzero) digits is 583200, while the sum is 49.

The spelling of 61995008065 in words is "sixty-one billion, nine hundred ninety-five million, eight thousand, sixty-five".