51900667869 has 8 divisors (see below), whose sum is σ = 70148848192. Its totient is φ = 34126466400.

The previous prime is 51900667867. The next prime is 51900667891. The reversal of 51900667869 is 96876600915.

It is a happy number.

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

It is not a de Polignac number, because 51900667869 - 2¹ = 51900667867 is a prime.

It is a super-2 number, since 2×51900667869² (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 (51900667867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118494457 + ... + 118494894.

It is an arithmetic number, because the mean of its divisors is an integer number (8768606024).

Almost surely, 2^51900667869 is an apocalyptic number.

It is an amenable number.

51900667869 is a deficient number, since it is larger than the sum of its proper divisors (18248180323).

51900667869 is a wasteful number, since it uses less digits than its factorization.

51900667869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236989427.

The product of its (nonzero) digits is 4898880, while the sum is 57.

The spelling of 51900667869 in words is "fifty-one billion, nine hundred million, six hundred sixty-seven thousand, eight hundred sixty-nine".