51211624021013 has 8 divisors (see below), whose sum is σ = 51454551511680. Its totient is φ = 50968698590880.

The previous prime is 51211624021001. The next prime is 51211624021021. The reversal of 51211624021013 is 31012042611215.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 51211624021013 - 2⁸ = 51211624020757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51211624021513) 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, 76656881 + ... + 77322057.

It is an arithmetic number, because the mean of its divisors is an integer number (6431818938960).

Almost surely, 2^{51211624021013} is an apocalyptic number.

It is an amenable number.

51211624021013 is a deficient number, since it is larger than the sum of its proper divisors (242927490667).

51211624021013 is a wasteful number, since it uses less digits than its factorization.

51211624021013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030267.

The product of its (nonzero) digits is 2880, while the sum is 29.

Adding to 51211624021013 its reverse (31012042611215), we get a palindrome (82223666632228).

The spelling of 51211624021013 in words is "fifty-one trillion, two hundred eleven billion, six hundred twenty-four million, twenty-one thousand, thirteen".