65541468787 has 2 divisors, whose sum is σ = 65541468788. Its totient is φ = 65541468786.

The previous prime is 65541468779. The next prime is 65541468847. The reversal of 65541468787 is 78786414556.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65541468787 - 2³ = 65541468779 is a prime.

It is not a weakly prime, because it can be changed into another prime (65541468757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32770734393 + 32770734394.

It is an arithmetic number, because the mean of its divisors is an integer number (32770734394).

Almost surely, 2^65541468787 is an apocalyptic number.

65541468787 is a deficient number, since it is larger than the sum of its proper divisors (1).

65541468787 is an equidigital number, since it uses as much as digits as its factorization.

65541468787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45158400, while the sum is 61.

It can be divided in two parts, 655414 and 68787, that added together give a square (724201 = 851²).

The spelling of 65541468787 in words is "sixty-five billion, five hundred forty-one million, four hundred sixty-eight thousand, seven hundred eighty-seven".