51444238623 has 8 divisors (see below), whose sum is σ = 68593390848. Its totient is φ = 34295622744.

The previous prime is 51444238613. The next prime is 51444238717. The reversal of 51444238623 is 32683244415.

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

It is not a de Polignac number, because 51444238623 - 2¹⁴ = 51444222239 is a prime.

It is a super-2 number, since 2×51444238623² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51444238613) 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, 234336 + ... + 397242.

It is an arithmetic number, because the mean of its divisors is an integer number (8574173856).

Almost surely, 2^51444238623 is an apocalyptic number.

51444238623 is a deficient number, since it is larger than the sum of its proper divisors (17149152225).

51444238623 is a wasteful number, since it uses less digits than its factorization.

51444238623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268173.

The product of its digits is 552960, while the sum is 42.

The spelling of 51444238623 in words is "fifty-one billion, four hundred forty-four million, two hundred thirty-eight thousand, six hundred twenty-three".