65031421012 has 12 divisors (see below), whose sum is σ = 114440770080. Its totient is φ = 32334058136.

The previous prime is 65031421003. The next prime is 65031421027. The reversal of 65031421012 is 21012413056.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45412288 + ... + 45413719.

It is an arithmetic number, because the mean of its divisors is an integer number (9536730840).

Almost surely, 2^65031421012 is an apocalyptic number.

It is an amenable number.

65031421012 is a deficient number, since it is larger than the sum of its proper divisors (49409349068).

65031421012 is a wasteful number, since it uses less digits than its factorization.

65031421012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90826190 (or 90826188 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 65031421012 its reverse (21012413056), we get a palindrome (86043834068).

The spelling of 65031421012 in words is "sixty-five billion, thirty-one million, four hundred twenty-one thousand, twelve".