65345540832 has 960 divisors, whose sum is σ = 239986188288. Its totient is φ = 17312486400.

The previous prime is 65345540783. The next prime is 65345540837. The reversal of 65345540832 is 23804554356.

65345540832 is a `hidden beast` number, since 65 + 3 + 4 + 554 + 0 + 8 + 32 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65345540837) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 1390330633 + ... + 1390330679.

Almost surely, 2^65345540832 is an apocalyptic number.

65345540832 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65345540832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119993094144).

65345540832 is an abundant number, since it is smaller than the sum of its proper divisors (174640647456).

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

65345540832 is a wasteful number, since it uses less digits than its factorization.

65345540832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 45.

The spelling of 65345540832 in words is "sixty-five billion, three hundred forty-five million, five hundred forty thousand, eight hundred thirty-two".