65260340400 has 120 divisors (see below), whose sum is σ = 209177395024. Its totient is φ = 17392204800.

The previous prime is 65260340359. The next prime is 65260340419. The reversal of 65260340400 is 404306256.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2073582 + ... + 2104818.

Almost surely, 2^65260340400 is an apocalyptic number.

65260340400 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 65260340400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104588697512).

65260340400 is an abundant number, since it is smaller than the sum of its proper divisors (143917054624).

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

65260340400 is a wasteful number, since it uses less digits than its factorization.

65260340400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32999 (or 32988 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 65260340400 its reverse (404306256), we get a palindrome (65664646656).

The spelling of 65260340400 in words is "sixty-five billion, two hundred sixty million, three hundred forty thousand, four hundred".