65657327703540 has 48 divisors (see below), whose sum is σ = 183858715893888. Its totient is φ = 17506887547264.

The previous prime is 65657327703421. The next prime is 65657327703571. The reversal of 65657327703540 is 4530772375656.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

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, 53550447 + ... + 54762806.

It is an arithmetic number, because the mean of its divisors is an integer number (3830389914456).

Almost surely, 2^{65657327703540} is an apocalyptic number.

65657327703540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65657327703540 is an abundant number, since it is smaller than the sum of its proper divisors (118201388190348).

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

65657327703540 is a wasteful number, since it uses less digits than its factorization.

65657327703540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108323368 (or 108323366 counting only the distinct ones).

The product of its (nonzero) digits is 111132000, while the sum is 60.

The spelling of 65657327703540 in words is "sixty-five trillion, six hundred fifty-seven billion, three hundred twenty-seven million, seven hundred three thousand, five hundred forty".