65538012330 has 512 divisors, whose sum is σ = 219370291200. Its totient is φ = 13586227200.

The previous prime is 65538012317. The next prime is 65538012391. The reversal of 65538012330 is 3321083556.

65538012330 is a `hidden beast` number, since 6 + 553 + 80 + 1 + 23 + 3 + 0 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 125792470 + ... + 125792990.

It is an arithmetic number, because the mean of its divisors is an integer number (428457600).

Almost surely, 2^65538012330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65538012330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109685145600).

65538012330 is an abundant number, since it is smaller than the sum of its proper divisors (153832278870).

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

65538012330 is a wasteful number, since it uses less digits than its factorization.

65538012330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707 (or 701 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

Adding to 65538012330 its reverse (3321083556), we get a palindrome (68859095886).

The spelling of 65538012330 in words is "sixty-five billion, five hundred thirty-eight million, twelve thousand, three hundred thirty".