65734494879561 has 8 divisors (see below), whose sum is σ = 92258940181920. Its totient is φ = 41516523081792.

The previous prime is 65734494879553. The next prime is 65734494879583. The reversal of 65734494879561 is 16597849443756.

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

It is not a de Polignac number, because 65734494879561 - 2³ = 65734494879553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65734494879541) 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, 576618376080 + ... + 576618376193.

It is an arithmetic number, because the mean of its divisors is an integer number (11532367522740).

Almost surely, 2^{65734494879561} is an apocalyptic number.

It is an amenable number.

65734494879561 is a deficient number, since it is larger than the sum of its proper divisors (26524445302359).

65734494879561 is a wasteful number, since it uses less digits than its factorization.

65734494879561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1153236752295.

The product of its digits is 5486745600, while the sum is 78.

The spelling of 65734494879561 in words is "sixty-five trillion, seven hundred thirty-four billion, four hundred ninety-four million, eight hundred seventy-nine thousand, five hundred sixty-one".