65440134055250 has 32 divisors (see below), whose sum is σ = 123119528688000. Its totient is φ = 26044515644400.

The previous prime is 65440134055243. The next prime is 65440134055271. The reversal of 65440134055250 is 5255043104456.

It is a super-2 number, since 2×65440134055250² (a number of 28 digits) contains 22 as substring.

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, 657640040 + ... + 657739539.

It is an arithmetic number, because the mean of its divisors is an integer number (3847485271500).

Almost surely, 2^{65440134055250} is an apocalyptic number.

65440134055250 is a deficient number, since it is larger than the sum of its proper divisors (57679394632750).

65440134055250 is a wasteful number, since it uses less digits than its factorization.

65440134055250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315379795 (or 1315379785 counting only the distinct ones).

The product of its (nonzero) digits is 1440000, while the sum is 44.

The spelling of 65440134055250 in words is "sixty-five trillion, four hundred forty billion, one hundred thirty-four million, fifty-five thousand, two hundred fifty".