65531392455360 has 448 divisors, whose sum is σ = 237771920655360. Its totient is φ = 15167944704000.

The previous prime is 65531392455281. The next prime is 65531392455377. The reversal of 65531392455360 is 6355429313556.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 65531392455360.

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, 15000610 + ... + 18870110.

It is an arithmetic number, because the mean of its divisors is an integer number (530740894320).

Almost surely, 2^{65531392455360} is an apocalyptic number.

65531392455360 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65531392455360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118885960327680).

65531392455360 is an abundant number, since it is smaller than the sum of its proper divisors (172240528200000).

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

65531392455360 is a wasteful number, since it uses less digits than its factorization.

65531392455360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3869616 (or 3869606 counting only the distinct ones).

The product of its (nonzero) digits is 43740000, while the sum is 57.

The spelling of 65531392455360 in words is "sixty-five trillion, five hundred thirty-one billion, three hundred ninety-two million, four hundred fifty-five thousand, three hundred sixty".