65463494400 has 324 divisors, whose sum is σ = 236883906168. Its totient is φ = 17245347840.

The previous prime is 65463494389. The next prime is 65463494417. The reversal of 65463494400 is 449436456.

65463494400 is a `hidden beast` number, since 6 + 5 + 4 + 634 + 9 + 4 + 4 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4773954 + ... + 4787646.

Almost surely, 2^65463494400 is an apocalyptic number.

65463494400 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 65463494400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118441953084).

65463494400 is an abundant number, since it is smaller than the sum of its proper divisors (171420411768).

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

65463494400 is a wasteful number, since it uses less digits than its factorization.

65463494400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13808 (or 13786 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 45.

The spelling of 65463494400 in words is "sixty-five billion, four hundred sixty-three million, four hundred ninety-four thousand, four hundred".