65475608880 has 160 divisors (see below), whose sum is σ = 221793304320. Its totient is φ = 15846589440.

The previous prime is 65475608879. The next prime is 65475608881. The reversal of 65475608880 is 8880657456.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (65475608879) and next prime (65475608881).

It is a self number, because there is not a number n which added to its sum of digits gives 65475608880.

It is not an unprimeable number, because it can be changed into a prime (65475608881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1598091 + ... + 1638549.

It is an arithmetic number, because the mean of its divisors is an integer number (1386208152).

Almost surely, 2^65475608880 is an apocalyptic number.

65475608880 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 65475608880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110896652160).

65475608880 is an abundant number, since it is smaller than the sum of its proper divisors (156317695440).

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

65475608880 is a wasteful number, since it uses less digits than its factorization.

65475608880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41099 (or 41093 counting only the distinct ones).

The product of its (nonzero) digits is 12902400, while the sum is 57.

The spelling of 65475608880 in words is "sixty-five billion, four hundred seventy-five million, six hundred eight thousand, eight hundred eighty".