53391658320 has 1440 divisors, whose sum is σ = 258407210880. Its totient is φ = 9684541440.

The previous prime is 53391658319. The next prime is 53391658321. The reversal of 53391658320 is 2385619335.

It is a happy number.

53391658320 is a `hidden beast` number, since 5 + 3 + 39 + 16 + 583 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (53391658319) and next prime (53391658321).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53391658321) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 95855482 + ... + 95856038.

It is an arithmetic number, because the mean of its divisors is an integer number (179449452).

Almost surely, 2^53391658320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53391658320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129203605440).

53391658320 is an abundant number, since it is smaller than the sum of its proper divisors (205015552560).

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

53391658320 is a wasteful number, since it uses less digits than its factorization.

53391658320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633 (or 617 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 45.

The spelling of 53391658320 in words is "fifty-three billion, three hundred ninety-one million, six hundred fifty-eight thousand, three hundred twenty".