65400066604131 has 16 divisors (see below), whose sum is σ = 101691065664000. Its totient is φ = 37371466630344.

The previous prime is 65400066604097. The next prime is 65400066604133. The reversal of 65400066604131 is 13140666000456.

It is not a de Polignac number, because 65400066604131 - 2⁷ = 65400066604003 is a prime.

It is a super-2 number, since 2×65400066604131² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65400066604133) 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 15 ways as a sum of consecutive naturals, for example, 31778456991 + ... + 31778459048.

It is an arithmetic number, because the mean of its divisors is an integer number (6355691604000).

Almost surely, 2^{65400066604131} is an apocalyptic number.

65400066604131 is a deficient number, since it is larger than the sum of its proper divisors (36290999059869).

65400066604131 is an equidigital number, since it uses as much as digits as its factorization.

65400066604131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63556916063 (or 63556916049 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 65400066604131 in words is "sixty-five trillion, four hundred billion, sixty-six million, six hundred four thousand, one hundred thirty-one".