51138167389 has 8 divisors (see below), whose sum is σ = 51649250400. Its totient is φ = 50627178000.

The previous prime is 51138167387. The next prime is 51138167429. The reversal of 51138167389 is 98376183115.

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 51138167389 - 2¹ = 51138167387 is a prime.

It is a super-2 number, since 2×51138167389² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51138167383) 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, 1712194 + ... + 1741804.

It is an arithmetic number, because the mean of its divisors is an integer number (6456156300).

Almost surely, 2^51138167389 is an apocalyptic number.

It is an amenable number.

51138167389 is a deficient number, since it is larger than the sum of its proper divisors (511083011).

51138167389 is a wasteful number, since it uses less digits than its factorization.

51138167389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46811.

The product of its digits is 1088640, while the sum is 52.

The spelling of 51138167389 in words is "fifty-one billion, one hundred thirty-eight million, one hundred sixty-seven thousand, three hundred eighty-nine".