65079901240 has 64 divisors (see below), whose sum is σ = 154505232000. Its totient is φ = 24602878080.

The previous prime is 65079901223. The next prime is 65079901277. The reversal of 65079901240 is 4210997056.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 216255 + ... + 420625.

It is an arithmetic number, because the mean of its divisors is an integer number (2414144250).

Almost surely, 2^65079901240 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 65079901240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77252616000).

65079901240 is an abundant number, since it is smaller than the sum of its proper divisors (89425330760).

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

65079901240 is a wasteful number, since it uses less digits than its factorization.

65079901240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204820 (or 204816 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 43.

The spelling of 65079901240 in words is "sixty-five billion, seventy-nine million, nine hundred one thousand, two hundred forty".