65478503135600 has 120 divisors (see below), whose sum is σ = 159265726757760. Its totient is φ = 25867263836160.

The previous prime is 65478503135497. The next prime is 65478503135609. The reversal of 65478503135600 is 653130587456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65478503135609) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16823624 + ... + 20346776.

It is an arithmetic number, because the mean of its divisors is an integer number (1327214389648).

Almost surely, 2^{65478503135600} 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 65478503135600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79632863378880).

65478503135600 is an abundant number, since it is smaller than the sum of its proper divisors (93787223622160).

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

65478503135600 is a wasteful number, since it uses less digits than its factorization.

65478503135600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3523747 (or 3523736 counting only the distinct ones).

The product of its (nonzero) digits is 9072000, while the sum is 53.

The spelling of 65478503135600 in words is "sixty-five trillion, four hundred seventy-eight billion, five hundred three million, one hundred thirty-five thousand, six hundred".