65981067075 has 216 divisors, whose sum is σ = 153967201024. Its totient is φ = 27418564800.

The previous prime is 65981067037. The next prime is 65981067107. The reversal of 65981067075 is 57076018956.

It is not a de Polignac number, because 65981067075 - 2⁶ = 65981067011 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 5139114 + ... + 5151936.

Almost surely, 2^65981067075 is an apocalyptic number.

65981067075 is an abundant number, since it is smaller than the sum of its proper divisors (87986133949).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65981067075 is a wasteful number, since it uses less digits than its factorization.

65981067075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12877 (or 12849 counting only the distinct ones).

The product of its (nonzero) digits is 3175200, while the sum is 54.

The spelling of 65981067075 in words is "sixty-five billion, nine hundred eighty-one million, sixty-seven thousand, seventy-five".