65411691609 has 64 divisors (see below), whose sum is σ = 102981288960. Its totient is φ = 36498366720.

The previous prime is 65411691581. The next prime is 65411691641. The reversal of 65411691609 is 90619611456.

It is not a de Polignac number, because 65411691609 - 2⁷ = 65411691481 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65411691649) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 37743907 + ... + 37745639.

It is an arithmetic number, because the mean of its divisors is an integer number (1609082640).

Almost surely, 2^65411691609 is an apocalyptic number.

It is an amenable number.

65411691609 is a deficient number, since it is larger than the sum of its proper divisors (37569597351).

65411691609 is a wasteful number, since it uses less digits than its factorization.

65411691609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3430.

The product of its (nonzero) digits is 349920, while the sum is 48.

The spelling of 65411691609 in words is "sixty-five billion, four hundred eleven million, six hundred ninety-one thousand, six hundred nine".