52231672440 has 192 divisors, whose sum is σ = 187553620800. Its totient is φ = 12539129856.

The previous prime is 52231672439. The next prime is 52231672477. The reversal of 52231672440 is 4427613225.

52231672440 is a `hidden beast` number, since 52 + 2 + 3 + 167 + 2 + 440 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 52231672395 and 52231672404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 44775 + ... + 326294.

It is an arithmetic number, because the mean of its divisors is an integer number (976841775).

Almost surely, 2^52231672440 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 52231672440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93776810400).

52231672440 is an abundant number, since it is smaller than the sum of its proper divisors (135321948360).

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

52231672440 is a wasteful number, since it uses less digits than its factorization.

52231672440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371126 (or 371119 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The spelling of 52231672440 in words is "fifty-two billion, two hundred thirty-one million, six hundred seventy-two thousand, four hundred forty".