65220107500 has 30 divisors (see below), whose sum is σ = 142623336548. Its totient is φ = 26088042000.

The previous prime is 65220107483. The next prime is 65220107507. The reversal of 65220107500 is 570102256.

It is not an unprimeable number, because it can be changed into a prime (65220107507) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 13041522 + ... + 13046521.

Almost surely, 2^65220107500 is an apocalyptic number.

It is an amenable number.

65220107500 is an abundant number, since it is smaller than the sum of its proper divisors (77403229048).

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

65220107500 is a wasteful number, since it uses less digits than its factorization.

65220107500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26088067 (or 26088050 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

Adding to 65220107500 its reverse (570102256), we get a palindrome (65790209756).

The spelling of 65220107500 in words is "sixty-five billion, two hundred twenty million, one hundred seven thousand, five hundred".