5212539640 has 288 divisors, whose sum is σ = 15501628800. Its totient is φ = 1570060800.

The previous prime is 5212539637. The next prime is 5212539659. The reversal of 5212539640 is 469352125.

It is a self number, because there is not a number n which added to its sum of digits gives 5212539640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 7351606 + ... + 7352314.

It is an arithmetic number, because the mean of its divisors is an integer number (53825100).

Almost surely, 2^5212539640 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 5212539640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7750814400).

5212539640 is an abundant number, since it is smaller than the sum of its proper divisors (10289089160).

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

5212539640 is a wasteful number, since it uses less digits than its factorization.

5212539640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787 (or 765 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 5212539640 is about 72197.9199146347. The cubic root of 5212539640 is about 1733.8696987363.

The spelling of 5212539640 in words is "five billion, two hundred twelve million, five hundred thirty-nine thousand, six hundred forty".