65845687910401 has 4 divisors (see below), whose sum is σ = 75252214754752. Its totient is φ = 56439161066052.

The previous prime is 65845687910399. The next prime is 65845687910423. The reversal of 65845687910401 is 10401978654856.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65845687910401 - 2¹ = 65845687910399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65845687970401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4703263422165 + ... + 4703263422178.

It is an arithmetic number, because the mean of its divisors is an integer number (18813053688688).

Almost surely, 2^{65845687910401} is an apocalyptic number.

It is an amenable number.

65845687910401 is a deficient number, since it is larger than the sum of its proper divisors (9406526844351).

65845687910401 is an equidigital number, since it uses as much as digits as its factorization.

65845687910401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9406526844350.

The product of its (nonzero) digits is 58060800, while the sum is 64.

The spelling of 65845687910401 in words is "sixty-five trillion, eight hundred forty-five billion, six hundred eighty-seven million, nine hundred ten thousand, four hundred one".