65508543480 has 64 divisors (see below), whose sum is σ = 198893439360. Its totient is φ = 17258473088.

The previous prime is 65508543479. The next prime is 65508543491. The reversal of 65508543480 is 8434580556.

It is a happy number.

65508543480 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 15 ways as a sum of consecutive naturals, for example, 3278622 + ... + 3298541.

It is an arithmetic number, because the mean of its divisors is an integer number (3107709990).

Almost surely, 2^65508543480 is an apocalyptic number.

65508543480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65508543480 is an abundant number, since it is smaller than the sum of its proper divisors (133384895880).

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

65508543480 is a wasteful number, since it uses less digits than its factorization.

65508543480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6577260 (or 6577256 counting only the distinct ones).

The product of its (nonzero) digits is 2304000, while the sum is 48.

The spelling of 65508543480 in words is "sixty-five billion, five hundred eight million, five hundred forty-three thousand, four hundred eighty".