53665265132965 has 8 divisors (see below), whose sum is σ = 64398516541560. Its totient is φ = 42932079851712.

The previous prime is 53665265132959. The next prime is 53665265132981. The reversal of 53665265132965 is 56923156256635.

It is a Cunningham number, because it is equal to 7325658²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1459452454084 + 52205812678881 = 1208078^2 + 7225359^2 .

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 53665265132965 - 2²⁷ = 53665130915237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53665265132897 and 53665265132906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14728554 + ... + 18007243.

It is an arithmetic number, because the mean of its divisors is an integer number (8049814567695).

Almost surely, 2^{53665265132965} is an apocalyptic number.

It is an amenable number.

53665265132965 is a deficient number, since it is larger than the sum of its proper divisors (10733251408595).

53665265132965 is a wasteful number, since it uses less digits than its factorization.

53665265132965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33063671.

The product of its digits is 262440000, while the sum is 64.

The spelling of 53665265132965 in words is "fifty-three trillion, six hundred sixty-five billion, two hundred sixty-five million, one hundred thirty-two thousand, nine hundred sixty-five".