52531645440 has 176 divisors, whose sum is σ = 168281872128. Its totient is φ = 13986545664.

The previous prime is 52531645427. The next prime is 52531645469. The reversal of 52531645440 is 4454613525.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11410179 + ... + 11414781.

Almost surely, 2^52531645440 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 52531645440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84140936064).

52531645440 is an abundant number, since it is smaller than the sum of its proper divisors (115750226688).

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

52531645440 is a wasteful number, since it uses less digits than its factorization.

52531645440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5374 (or 5356 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 39.

It can be divided in two parts, 52531 and 645440, that added together give a triangular number (697971 = T₁₁₈₁).

The spelling of 52531645440 in words is "fifty-two billion, five hundred thirty-one million, six hundred forty-five thousand, four hundred forty".