65020071500 has 96 divisors (see below), whose sum is σ = 143506446720. Its totient is φ = 25734240000.

The previous prime is 65020071481. The next prime is 65020071511. The reversal of 65020071500 is 517002056.

It is a super-2 number, since 2×65020071500² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 65020071500.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20911946 + ... + 20915054.

It is an arithmetic number, because the mean of its divisors is an integer number (1494858820).

Almost surely, 2^65020071500 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 65020071500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71753223360).

65020071500 is an abundant number, since it is smaller than the sum of its proper divisors (78486375220).

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

65020071500 is a wasteful number, since it uses less digits than its factorization.

65020071500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3556 (or 3544 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 26.

Adding to 65020071500 its reverse (517002056), we get a palindrome (65537073556).

The spelling of 65020071500 in words is "sixty-five billion, twenty million, seventy-one thousand, five hundred".