65749249471 has 8 divisors (see below), whose sum is σ = 69675404400. Its totient is φ = 61933690560.

The previous prime is 65749249463. The next prime is 65749249507. The reversal of 65749249471 is 17494294756.

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 65749249471 - 2³ = 65749249463 is a prime.

It is a super-3 number, since 3×65749249471³ (a number of 33 digits) contains 333 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 (65749249411) 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, 27647781 + ... + 27650158.

It is an arithmetic number, because the mean of its divisors is an integer number (8709425550).

Almost surely, 2^65749249471 is an apocalyptic number.

65749249471 is a deficient number, since it is larger than the sum of its proper divisors (3926154929).

65749249471 is a wasteful number, since it uses less digits than its factorization.

65749249471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55298009.

The product of its digits is 15240960, while the sum is 58.

The spelling of 65749249471 in words is "sixty-five billion, seven hundred forty-nine million, two hundred forty-nine thousand, four hundred seventy-one".