65642385480 has 768 divisors, whose sum is σ = 248544806400. Its totient is φ = 13795246080.

The previous prime is 65642385461. The next prime is 65642385533. The reversal of 65642385480 is 8458324656.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 602223666 + ... + 602223774.

It is an arithmetic number, because the mean of its divisors is an integer number (323626050).

Almost surely, 2^65642385480 is an apocalyptic number.

65642385480 is a gapful number since it is divisible by the number (60) 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 65642385480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124272403200).

65642385480 is an abundant number, since it is smaller than the sum of its proper divisors (182902420920).

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

65642385480 is a wasteful number, since it uses less digits than its factorization.

65642385480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294 (or 283 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 51.

The spelling of 65642385480 in words is "sixty-five billion, six hundred forty-two million, three hundred eighty-five thousand, four hundred eighty".