65883658381 has 8 divisors (see below), whose sum is σ = 68858145720. Its totient is φ = 62956013568.

The previous prime is 65883658339. The next prime is 65883658403. The reversal of 65883658381 is 18385638856.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1602756 + 65882055625 = 1266^2 + 256675^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65883658381 - 2⁹ = 65883657869 is a prime.

It is a super-2 number, since 2×65883658381² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65883658481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11707756 + ... + 11713381.

It is an arithmetic number, because the mean of its divisors is an integer number (8607268215).

Almost surely, 2^65883658381 is an apocalyptic number.

It is an amenable number.

65883658381 is a deficient number, since it is larger than the sum of its proper divisors (2974487339).

65883658381 is a wasteful number, since it uses less digits than its factorization.

65883658381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23421263.

The product of its digits is 33177600, while the sum is 61.

The spelling of 65883658381 in words is "sixty-five billion, eight hundred eighty-three million, six hundred fifty-eight thousand, three hundred eighty-one".