65659378441 has 8 divisors (see below), whose sum is σ = 67896719424. Its totient is φ = 63459018480.

The previous prime is 65659378423. The next prime is 65659378451. The reversal of 65659378441 is 14487395656.

65659378441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 65659378441 - 2⁹ = 65659377929 is a prime.

It is a super-2 number, since 2×65659378441² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65659378451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9241645 + ... + 9248746.

It is an arithmetic number, because the mean of its divisors is an integer number (8487089928).

Almost surely, 2^65659378441 is an apocalyptic number.

It is an amenable number.

65659378441 is a deficient number, since it is larger than the sum of its proper divisors (2237340983).

65659378441 is a wasteful number, since it uses less digits than its factorization.

65659378441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18490511.

The product of its digits is 21772800, while the sum is 58.

The spelling of 65659378441 in words is "sixty-five billion, six hundred fifty-nine million, three hundred seventy-eight thousand, four hundred forty-one".