65474070891 has 8 divisors (see below), whose sum is σ = 87609434064. Its totient is φ = 43494044160.

The previous prime is 65474070847. The next prime is 65474070911. The reversal of 65474070891 is 19807047456.

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

It is not a de Polignac number, because 65474070891 - 2⁷ = 65474070763 is a prime.

It is a super-3 number, since 3×65474070891³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (65474070391) 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, 38833126 + ... + 38834811.

It is an arithmetic number, because the mean of its divisors is an integer number (10951179258).

Almost surely, 2^65474070891 is an apocalyptic number.

65474070891 is a deficient number, since it is larger than the sum of its proper divisors (22135363173).

65474070891 is a wasteful number, since it uses less digits than its factorization.

65474070891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77668221.

The product of its (nonzero) digits is 1693440, while the sum is 51.

The spelling of 65474070891 in words is "sixty-five billion, four hundred seventy-four million, seventy thousand, eight hundred ninety-one".