65532621756 has 72 divisors (see below), whose sum is σ = 178078481616. Its totient is φ = 18702109440.

The previous prime is 65532621719. The next prime is 65532621769. The reversal of 65532621756 is 65712623556.

65532621756 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 an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 452136 + ... + 579216.

Almost surely, 2^65532621756 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 65532621756, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89039240808).

65532621756 is an abundant number, since it is smaller than the sum of its proper divisors (112545859860).

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

65532621756 is a wasteful number, since it uses less digits than its factorization.

65532621756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127979 (or 127970 counting only the distinct ones).

The product of its digits is 2268000, while the sum is 48.

The spelling of 65532621756 in words is "sixty-five billion, five hundred thirty-two million, six hundred twenty-one thousand, seven hundred fifty-six".