65630149600 has 216 divisors, whose sum is σ = 174306890520. Its totient is φ = 24062745600.

The previous prime is 65630149591. The next prime is 65630149609. The reversal of 65630149600 is 694103656.

It is an interprime number because it is at equal distance from previous prime (65630149591) and next prime (65630149609).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65630149609) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 14604954 + ... + 14609446.

It is an arithmetic number, because the mean of its divisors is an integer number (806976345).

Almost surely, 2^65630149600 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65630149600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87153445260).

65630149600 is an abundant number, since it is smaller than the sum of its proper divisors (108676740920).

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

65630149600 is a wasteful number, since it uses less digits than its factorization.

65630149600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4594 (or 4550 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 40.

The spelling of 65630149600 in words is "sixty-five billion, six hundred thirty million, one hundred forty-nine thousand, six hundred".