65921460528 has 320 divisors, whose sum is σ = 216153308160. Its totient is φ = 16816128000.

The previous prime is 65921460523. The next prime is 65921460529. The reversal of 65921460528 is 82506412956.

65921460528 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (65921460523) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 51140908 + ... + 51142196.

It is an arithmetic number, because the mean of its divisors is an integer number (675479088).

Almost surely, 2^65921460528 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 65921460528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108076654080).

65921460528 is an abundant number, since it is smaller than the sum of its proper divisors (150231847632).

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

65921460528 is a wasteful number, since it uses less digits than its factorization.

65921460528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1556 (or 1550 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 48.

The spelling of 65921460528 in words is "sixty-five billion, nine hundred twenty-one million, four hundred sixty thousand, five hundred twenty-eight".