65880767863945 has 8 divisors (see below), whose sum is σ = 79057896503040. Its totient is φ = 52703964246960.

The previous prime is 65880767863927. The next prime is 65880767863961. The reversal of 65880767863945 is 54936876708856.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65880767863945 - 2¹¹ = 65880767861897 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80809371 + ... + 81620560.

It is an arithmetic number, because the mean of its divisors is an integer number (9882237062880).

Almost surely, 2^{65880767863945} is an apocalyptic number.

It is an amenable number.

65880767863945 is a deficient number, since it is larger than the sum of its proper divisors (13177128639095).

65880767863945 is a wasteful number, since it uses less digits than its factorization.

65880767863945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162511055.

The product of its (nonzero) digits is 14631321600, while the sum is 82.

The spelling of 65880767863945 in words is "sixty-five trillion, eight hundred eighty billion, seven hundred sixty-seven million, eight hundred sixty-three thousand, nine hundred forty-five".