65081749917 has 32 divisors (see below), whose sum is σ = 90247161600. Its totient is φ = 41668558848.

The previous prime is 65081749879. The next prime is 65081749937. The reversal of 65081749917 is 71994718056.

It is not a de Polignac number, because 65081749917 - 2¹⁵ = 65081717149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65081749937) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19607184 + ... + 19610502.

It is an arithmetic number, because the mean of its divisors is an integer number (2820223800).

Almost surely, 2^65081749917 is an apocalyptic number.

It is an amenable number.

65081749917 is a deficient number, since it is larger than the sum of its proper divisors (25165411683).

65081749917 is a wasteful number, since it uses less digits than its factorization.

65081749917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4485.

The product of its (nonzero) digits is 3810240, while the sum is 57.

The spelling of 65081749917 in words is "sixty-five billion, eighty-one million, seven hundred forty-nine thousand, nine hundred seventeen".