65128274497 has 8 divisors (see below), whose sum is σ = 76514336640. Its totient is φ = 54653097360.

The previous prime is 65128274489. The next prime is 65128274509. The reversal of 65128274497 is 79447282156.

65128274497 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 65128274497 - 2³ = 65128274489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65128274417) 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, 227721097 + ... + 227721382.

It is an arithmetic number, because the mean of its divisors is an integer number (9564292080).

Almost surely, 2^65128274497 is an apocalyptic number.

It is an amenable number.

65128274497 is a deficient number, since it is larger than the sum of its proper divisors (11386062143).

65128274497 is a wasteful number, since it uses less digits than its factorization.

65128274497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455442503.

The product of its digits is 6773760, while the sum is 55.

The spelling of 65128274497 in words is "sixty-five billion, one hundred twenty-eight million, two hundred seventy-four thousand, four hundred ninety-seven".