65031421013 has 16 divisors (see below), whose sum is σ = 70677647040. Its totient is φ = 59477531904.

The previous prime is 65031421003. The next prime is 65031421027. The reversal of 65031421013 is 31012413056.

65031421013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 65031421013 - 2⁸ = 65031420757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65031421003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5874878 + ... + 5885936.

It is an arithmetic number, because the mean of its divisors is an integer number (4417352940).

Almost surely, 2^65031421013 is an apocalyptic number.

It is an amenable number.

65031421013 is a deficient number, since it is larger than the sum of its proper divisors (5646226027).

65031421013 is a wasteful number, since it uses less digits than its factorization.

65031421013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15188.

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 65031421013 its reverse (31012413056), we get a palindrome (96043834069).

The spelling of 65031421013 in words is "sixty-five billion, thirty-one million, four hundred twenty-one thousand, thirteen".