53216953345 has 8 divisors (see below), whose sum is σ = 64518698664. Its totient is φ = 42134659584.

The previous prime is 53216953333. The next prime is 53216953423. The reversal of 53216953345 is 54335961235.

It is a Cunningham number, because it is equal to 230688²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1 + 53216953344 = 1^2 + 230688^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53216953345 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53216953295 and 53216953304.

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, 54862354 + ... + 54863323.

It is an arithmetic number, because the mean of its divisors is an integer number (8064837333).

Almost surely, 2^53216953345 is an apocalyptic number.

It is an amenable number.

53216953345 is a deficient number, since it is larger than the sum of its proper divisors (11301745319).

53216953345 is a wasteful number, since it uses less digits than its factorization.

53216953345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109725779.

The product of its digits is 1458000, while the sum is 46.

The spelling of 53216953345 in words is "fifty-three billion, two hundred sixteen million, nine hundred fifty-three thousand, three hundred forty-five".