65493491163381 has 48 divisors (see below), whose sum is σ = 98807553936000. Its totient is φ = 43350123475008.

The previous prime is 65493491163367. The next prime is 65493491163407. The reversal of 65493491163381 is 18336119439456.

65493491163381 is a `hidden beast` number, since 6 + 5 + 4 + 9 + 3 + 4 + 91 + 163 + 381 = 666.

It is not a de Polignac number, because 65493491163381 - 2⁵ = 65493491163349 is a prime.

It is a super-2 number, since 2×65493491163381² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65493491163481) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 81755080 + ... + 82552286.

It is an arithmetic number, because the mean of its divisors is an integer number (2058490707000).

Almost surely, 2^{65493491163381} is an apocalyptic number.

It is an amenable number.

65493491163381 is a deficient number, since it is larger than the sum of its proper divisors (33314062772619).

65493491163381 is a wasteful number, since it uses less digits than its factorization.

65493491163381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799640 (or 799628 counting only the distinct ones).

The product of its digits is 50388480, while the sum is 63.

The spelling of 65493491163381 in words is "sixty-five trillion, four hundred ninety-three billion, four hundred ninety-one million, one hundred sixty-three thousand, three hundred eighty-one".