65542640577903 has 32 divisors (see below), whose sum is σ = 102841220617920. Its totient is φ = 41113099929600.

The previous prime is 65542640577871. The next prime is 65542640577941. The reversal of 65542640577903 is 30977504624556.

65542640577903 is a `hidden beast` number, since 6 + 5 + 54 + 2 + 6 + 4 + 0 + 577 + 9 + 0 + 3 = 666.

It is not a de Polignac number, because 65542640577903 - 2⁵ = 65542640577871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65542640577103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18686298 + ... + 21914903.

It is an arithmetic number, because the mean of its divisors is an integer number (3213788144310).

Almost surely, 2^{65542640577903} is an apocalyptic number.

65542640577903 is a deficient number, since it is larger than the sum of its proper divisors (37298580040017).

65542640577903 is a wasteful number, since it uses less digits than its factorization.

65542640577903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40604744 (or 40604738 counting only the distinct ones).

The product of its (nonzero) digits is 190512000, while the sum is 63.

The spelling of 65542640577903 in words is "sixty-five trillion, five hundred forty-two billion, six hundred forty million, five hundred seventy-seven thousand, nine hundred three".