65466101640 has 128 divisors (see below), whose sum is σ = 201175603200. Its totient is φ = 17033829120.

The previous prime is 65466101639. The next prime is 65466101647. The reversal of 65466101640 is 4610166456.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (65466101647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5355135 + ... + 5367345.

It is an arithmetic number, because the mean of its divisors is an integer number (1571684400).

Almost surely, 2^65466101640 is an apocalyptic number.

65466101640 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 65466101640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100587801600).

65466101640 is an abundant number, since it is smaller than the sum of its proper divisors (135709501560).

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

65466101640 is a wasteful number, since it uses less digits than its factorization.

65466101640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13307 (or 13303 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 65466101640 in words is "sixty-five billion, four hundred sixty-six million, one hundred one thousand, six hundred forty".