65412178897 has 24 divisors (see below), whose sum is σ = 73787239680. Its totient is φ = 57896130240.

The previous prime is 65412178873. The next prime is 65412178907. The reversal of 65412178897 is 79887121456.

It is a de Polignac number, because none of the positive numbers 2^k-65412178897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65412178837) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 513778 + ... + 628324.

It is an arithmetic number, because the mean of its divisors is an integer number (3074468320).

Almost surely, 2^65412178897 is an apocalyptic number.

It is an amenable number.

65412178897 is a deficient number, since it is larger than the sum of its proper divisors (8375060783).

65412178897 is a wasteful number, since it uses less digits than its factorization.

65412178897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114713 (or 114700 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 58.

The spelling of 65412178897 in words is "sixty-five billion, four hundred twelve million, one hundred seventy-eight thousand, eight hundred ninety-seven".