65713612800 has 1152 divisors, whose sum is σ = 263233152000. Its totient is φ = 14273740800.

The previous prime is 65713612799. The next prime is 65713612813. The reversal of 65713612800 is 821631756.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 738355156 + ... + 738355244.

It is an arithmetic number, because the mean of its divisors is an integer number (228501000).

Almost surely, 2^65713612800 is an apocalyptic number.

65713612800 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 65713612800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131616576000).

65713612800 is an abundant number, since it is smaller than the sum of its proper divisors (197519539200).

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

65713612800 is a wasteful number, since it uses less digits than its factorization.

65713612800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The spelling of 65713612800 in words is "sixty-five billion, seven hundred thirteen million, six hundred twelve thousand, eight hundred".