53387431680 has 576 divisors, whose sum is σ = 197299307520. Its totient is φ = 12179865600.

The previous prime is 53387431679. The next prime is 53387431693. The reversal of 53387431680 is 8613478335.

It is a super-2 number, since 2×53387431680² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 50222829 + ... + 50223891.

It is an arithmetic number, because the mean of its divisors is an integer number (342533520).

Almost surely, 2^53387431680 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 53387431680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98649653760).

53387431680 is an abundant number, since it is smaller than the sum of its proper divisors (143911875840).

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

53387431680 is a wasteful number, since it uses less digits than its factorization.

53387431680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1168 (or 1154 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 48.

The spelling of 53387431680 in words is "fifty-three billion, three hundred eighty-seven million, four hundred thirty-one thousand, six hundred eighty".