65373434645 has 8 divisors (see below), whose sum is σ = 80568341304. Its totient is φ = 50885267904.

The previous prime is 65373434641. The next prime is 65373434647. The reversal of 65373434645 is 54643437356.

It can be written as a sum of positive squares in 4 ways, for example, as 40800364081 + 24573070564 = 201991^2 + 156758^2 .

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 65373434645 - 2² = 65373434641 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 65373434593 and 65373434602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65373434641) 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, 176684774 + ... + 176685143.

It is an arithmetic number, because the mean of its divisors is an integer number (10071042663).

Almost surely, 2^65373434645 is an apocalyptic number.

It is an amenable number.

65373434645 is a deficient number, since it is larger than the sum of its proper divisors (15194906659).

65373434645 is a wasteful number, since it uses less digits than its factorization.

65373434645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353369959.

The product of its digits is 10886400, while the sum is 50.

The spelling of 65373434645 in words is "sixty-five billion, three hundred seventy-three million, four hundred thirty-four thousand, six hundred forty-five".