65237756532 has 72 divisors (see below), whose sum is σ = 164899748160. Its totient is φ = 20064844800.

The previous prime is 65237756509. The next prime is 65237756539. The reversal of 65237756532 is 23565773256.

65237756532 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65237756539) 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, 6421657 + ... + 6431807.

It is an arithmetic number, because the mean of its divisors is an integer number (2290274280).

Almost surely, 2^65237756532 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 65237756532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82449874080).

65237756532 is an abundant number, since it is smaller than the sum of its proper divisors (99661991628).

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

65237756532 is a wasteful number, since it uses less digits than its factorization.

65237756532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13353 (or 13338 counting only the distinct ones).

The product of its digits is 7938000, while the sum is 51.

The spelling of 65237756532 in words is "sixty-five billion, two hundred thirty-seven million, seven hundred fifty-six thousand, five hundred thirty-two".