65040196800 has 336 divisors, whose sum is σ = 217314840960. Its totient is φ = 17027112960.

The previous prime is 65040196787. The next prime is 65040196813. The reversal of 65040196800 is 869104056.

It is an interprime number because it is at equal distance from previous prime (65040196787) and next prime (65040196813).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 146817379 + ... + 146817821.

It is an arithmetic number, because the mean of its divisors is an integer number (646770360).

Almost surely, 2^65040196800 is an apocalyptic number.

65040196800 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 65040196800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108657420480).

65040196800 is an abundant number, since it is smaller than the sum of its proper divisors (152274644160).

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

65040196800 is a wasteful number, since it uses less digits than its factorization.

65040196800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960 (or 945 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The spelling of 65040196800 in words is "sixty-five billion, forty million, one hundred ninety-six thousand, eight hundred".