53398822765 has 16 divisors (see below), whose sum is σ = 64390260528. Its totient is φ = 42511737856.

The previous prime is 53398822759. The next prime is 53398822777. The reversal of 53398822765 is 56722889335.

It can be written as a sum of positive squares in 8 ways, for example, as 143568324 + 53255254441 = 11982^2 + 230771^2 .

It is a cyclic number.

It is not a de Polignac number, because 53398822765 - 2¹⁷ = 53398691693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 911499 + ... + 968311.

It is an arithmetic number, because the mean of its divisors is an integer number (4024391283).

Almost surely, 2^53398822765 is an apocalyptic number.

It is an amenable number.

53398822765 is a deficient number, since it is larger than the sum of its proper divisors (10991437763).

53398822765 is a wasteful number, since it uses less digits than its factorization.

53398822765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57728.

The product of its digits is 21772800, while the sum is 58.

The spelling of 53398822765 in words is "fifty-three billion, three hundred ninety-eight million, eight hundred twenty-two thousand, seven hundred sixty-five".