53665664064 has 56 divisors (see below), whose sum is σ = 142579697568. Its totient is φ = 17814312960.

The previous prime is 53665664051. The next prime is 53665664077. The reversal of 53665664064 is 46046656635.

It is an interprime number because it is at equal distance from previous prime (53665664051) and next prime (53665664077).

It is a junction number, because it is equal to n+sod(n) for n = 53665663998 and 53665664016.

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, 533622 + ... + 626165.

It is an arithmetic number, because the mean of its divisors is an integer number (2546066028).

Almost surely, 2^53665664064 is an apocalyptic number.

It is an amenable number.

53665664064 is an abundant number, since it is smaller than the sum of its proper divisors (88914033504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53665664064 is a wasteful number, since it uses less digits than its factorization.

53665664064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160043 (or 1160033 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 51.

The spelling of 53665664064 in words is "fifty-three billion, six hundred sixty-five million, six hundred sixty-four thousand, sixty-four".