65440622515340 has 12 divisors (see below), whose sum is σ = 137425307282256. Its totient is φ = 26176249006128.

The previous prime is 65440622515313. The next prime is 65440622515399. The reversal of 65440622515340 is 4351522604456.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1636015562864 + ... + 1636015562903.

It is an arithmetic number, because the mean of its divisors is an integer number (11452108940188).

Almost surely, 2^{65440622515340} is an apocalyptic number.

It is an amenable number.

65440622515340 is an abundant number, since it is smaller than the sum of its proper divisors (71984684766916).

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

65440622515340 is a wasteful number, since it uses less digits than its factorization.

65440622515340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3272031125776 (or 3272031125774 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 47.

The spelling of 65440622515340 in words is "sixty-five trillion, four hundred forty billion, six hundred twenty-two million, five hundred fifteen thousand, three hundred forty".