65500721562 has 48 divisors (see below), whose sum is σ = 142719259392. Its totient is φ = 20017177920.

The previous prime is 65500721521. The next prime is 65500721567. The reversal of 65500721562 is 26512700556.

It is a self number, because there is not a number n which added to its sum of digits gives 65500721562.

It is not an unprimeable number, because it can be changed into a prime (65500721567) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 420603 + ... + 554894.

It is an arithmetic number, because the mean of its divisors is an integer number (2973317904).

Almost surely, 2^65500721562 is an apocalyptic number.

65500721562 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

65500721562 is an abundant number, since it is smaller than the sum of its proper divisors (77218537830).

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

65500721562 is a wasteful number, since it uses less digits than its factorization.

65500721562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975571 (or 975552 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 39.

The spelling of 65500721562 in words is "sixty-five billion, five hundred million, seven hundred twenty-one thousand, five hundred sixty-two".