65615952349 has 8 divisors (see below), whose sum is σ = 66449910968. Its totient is φ = 64785208320.

The previous prime is 65615952341. The next prime is 65615952359. The reversal of 65615952349 is 94325951656.

It can be written as a sum of positive squares in 4 ways, for example, as 4545186724 + 61070765625 = 67418^2 + 247125^2 .

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 65615952349 - 2³ = 65615952341 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65615952349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65615952341) 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, 762552 + ... + 844225.

It is an arithmetic number, because the mean of its divisors is an integer number (8306238871).

Almost surely, 2^65615952349 is an apocalyptic number.

It is an amenable number.

65615952349 is a deficient number, since it is larger than the sum of its proper divisors (833958619).

65615952349 is a wasteful number, since it uses less digits than its factorization.

65615952349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1607295.

The product of its digits is 8748000, while the sum is 55.

The spelling of 65615952349 in words is "sixty-five billion, six hundred fifteen million, nine hundred fifty-two thousand, three hundred forty-nine".