65400554441671 has 16 divisors (see below), whose sum is σ = 66523968645120. Its totient is φ = 64282821470560.

The previous prime is 65400554441657. The next prime is 65400554441707. The reversal of 65400554441671 is 17614445500456.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 65400554441671 - 2³⁷ = 65263115488199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65400554441071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148760445 + ... + 149199433.

It is an arithmetic number, because the mean of its divisors is an integer number (4157748040320).

Almost surely, 2^{65400554441671} is an apocalyptic number.

65400554441671 is a deficient number, since it is larger than the sum of its proper divisors (1123414203449).

65400554441671 is a wasteful number, since it uses less digits than its factorization.

65400554441671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445454.

The product of its (nonzero) digits is 8064000, while the sum is 52.

The spelling of 65400554441671 in words is "sixty-five trillion, four hundred billion, five hundred fifty-four million, four hundred forty-one thousand, six hundred seventy-one".