65212412400 has 90 divisors (see below), whose sum is σ = 226305198080. Its totient is φ = 17389975680.

The previous prime is 65212412381. The next prime is 65212412423. The reversal of 65212412400 is 421421256.

65212412400 is a `hidden beast` number, since 6 + 5 + 212 + 41 + 2 + 400 = 666.

It is a tau number, because it is divible by the number of its divisors (90).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 9053680 + ... + 9060879.

Almost surely, 2^65212412400 is an apocalyptic number.

65212412400 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65212412400 is an abundant number, since it is smaller than the sum of its proper divisors (161092785680).

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

65212412400 is a wasteful number, since it uses less digits than its factorization.

65212412400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18114583 (or 18114569 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 65212412400 its reverse (421421256), we get a palindrome (65633833656).

The spelling of 65212412400 in words is "sixty-five billion, two hundred twelve million, four hundred twelve thousand, four hundred".