65490593568 has 96 divisors (see below), whose sum is σ = 176837556672. Its totient is φ = 21213465600.

The previous prime is 65490593527. The next prime is 65490593579. The reversal of 65490593568 is 86539509456.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 418678 + ... + 553418.

It is an arithmetic number, because the mean of its divisors is an integer number (1842057882).

Almost surely, 2^65490593568 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 65490593568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88418778336).

65490593568 is an abundant number, since it is smaller than the sum of its proper divisors (111346963104).

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

65490593568 is a wasteful number, since it uses less digits than its factorization.

65490593568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134898 (or 134890 counting only the distinct ones).

The product of its (nonzero) digits is 34992000, while the sum is 60.

The spelling of 65490593568 in words is "sixty-five billion, four hundred ninety million, five hundred ninety-three thousand, five hundred sixty-eight".