65722113552 has 160 divisors (see below), whose sum is σ = 184059648000. Its totient is φ = 20143019520.

The previous prime is 65722113491. The next prime is 65722113553. The reversal of 65722113552 is 25531122756.

It is a self number, because there is not a number n which added to its sum of digits gives 65722113552.

It is not an unprimeable number, because it can be changed into a prime (65722113553) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4243102 + ... + 4258562.

It is an arithmetic number, because the mean of its divisors is an integer number (1150372800).

Almost surely, 2^65722113552 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 65722113552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92029824000).

65722113552 is an abundant number, since it is smaller than the sum of its proper divisors (118337534448).

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

65722113552 is a wasteful number, since it uses less digits than its factorization.

65722113552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15629 (or 15623 counting only the distinct ones).

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

The spelling of 65722113552 in words is "sixty-five billion, seven hundred twenty-two million, one hundred thirteen thousand, five hundred fifty-two".