65414390775005 has 8 divisors (see below), whose sum is σ = 78616024257624. Its totient is φ = 52252342401600.

The previous prime is 65414390775001. The next prime is 65414390775029. The reversal of 65414390775005 is 50057709341456.

It can be written as a sum of positive squares in 4 ways, for example, as 33562521862489 + 31851868912516 = 5793317^2 + 5643746^2 .

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

It is not a de Polignac number, because 65414390775005 - 2² = 65414390775001 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65414390775001) 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, 9896273666 + ... + 9896280275.

It is an arithmetic number, because the mean of its divisors is an integer number (9827003032203).

Almost surely, 2^{65414390775005} is an apocalyptic number.

It is an amenable number.

65414390775005 is a deficient number, since it is larger than the sum of its proper divisors (13201633482619).

65414390775005 is a wasteful number, since it uses less digits than its factorization.

65414390775005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19792554607.

The product of its (nonzero) digits is 15876000, while the sum is 56.

The spelling of 65414390775005 in words is "sixty-five trillion, four hundred fourteen billion, three hundred ninety million, seven hundred seventy-five thousand, five".