52931763840 has 128 divisors (see below), whose sum is σ = 169520915520. Its totient is φ = 14048133120.

The previous prime is 52931763823. The next prime is 52931763847. The reversal of 52931763840 is 4836713925.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

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

It is a self number, because there is not a number n which added to its sum of digits gives 52931763840.

It is not an unprimeable number, because it can be changed into a prime (52931763847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 339792 + ... + 470448.

It is a 1-persistent number, because it is pandigital, but 2⋅52931763840 = 105863527680 is not.

Almost surely, 2^52931763840 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 52931763840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84760457760).

52931763840 is an abundant number, since it is smaller than the sum of its proper divisors (116589151680).

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

52931763840 is a wasteful number, since it uses less digits than its factorization.

52931763840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130890 (or 130878 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 48.

The spelling of 52931763840 in words is "fifty-two billion, nine hundred thirty-one million, seven hundred sixty-three thousand, eight hundred forty".