65402268481 has 16 divisors (see below), whose sum is σ = 72993218688. Its totient is φ = 58100358400.

The previous prime is 65402268479. The next prime is 65402268517. The reversal of 65402268481 is 18486220456.

It is a cyclic number.

It is not a de Polignac number, because 65402268481 - 2¹ = 65402268479 is a prime.

It is a super-2 number, since 2×65402268481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65402268781) 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 in 15 ways as a sum of consecutive naturals, for example, 282286 + ... + 458791.

It is an arithmetic number, because the mean of its divisors is an integer number (4562076168).

Almost surely, 2^65402268481 is an apocalyptic number.

It is an amenable number.

65402268481 is a deficient number, since it is larger than the sum of its proper divisors (7590950207).

65402268481 is a wasteful number, since it uses less digits than its factorization.

65402268481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741272.

The product of its (nonzero) digits is 737280, while the sum is 46.

The spelling of 65402268481 in words is "sixty-five billion, four hundred two million, two hundred sixty-eight thousand, four hundred eighty-one".