51818280467 has 4 divisors (see below), whose sum is σ = 51844466520. Its totient is φ = 51792094416.

The previous prime is 51818280463. The next prime is 51818280473. The reversal of 51818280467 is 76408281815.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51818280467 - 2² = 51818280463 is a prime.

It is a super-3 number, since 3×51818280467³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51818280463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13090058 + ... + 13094015.

It is an arithmetic number, because the mean of its divisors is an integer number (12961116630).

Almost surely, 2^51818280467 is an apocalyptic number.

51818280467 is a deficient number, since it is larger than the sum of its proper divisors (26186053).

51818280467 is a wasteful number, since it uses less digits than its factorization.

51818280467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26186052.

The product of its (nonzero) digits is 860160, while the sum is 50.

The spelling of 51818280467 in words is "fifty-one billion, eight hundred eighteen million, two hundred eighty thousand, four hundred sixty-seven".