65133641421 has 12 divisors (see below), whose sum is σ = 96269878848. Its totient is φ = 42412603464.

The previous prime is 65133641389. The next prime is 65133641449. The reversal of 65133641421 is 12414633156.

65133641421 is a `hidden beast` number, since 6 + 5 + 1 + 3 + 3 + 641 + 4 + 2 + 1 = 666.

It is not a de Polignac number, because 65133641421 - 2⁵ = 65133641389 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65133649421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84151605 + ... + 84152378.

It is an arithmetic number, because the mean of its divisors is an integer number (8022489904).

Almost surely, 2^65133641421 is an apocalyptic number.

It is an amenable number.

65133641421 is a deficient number, since it is larger than the sum of its proper divisors (31136237427).

65133641421 is a wasteful number, since it uses less digits than its factorization.

65133641421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168304032 (or 168304029 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The spelling of 65133641421 in words is "sixty-five billion, one hundred thirty-three million, six hundred forty-one thousand, four hundred twenty-one".