51267304849 has 4 divisors (see below), whose sum is σ = 51282426880. Its totient is φ = 51252182820.

The previous prime is 51267304843. The next prime is 51267304853. The reversal of 51267304849 is 94840376215.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51267304849 - 2³ = 51267304841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51267304841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7555929 + ... + 7562710.

It is an arithmetic number, because the mean of its divisors is an integer number (12820606720).

It is a 1-persistent number, because it is pandigital, but 2⋅51267304849 = 102534609698 is not.

Almost surely, 2^51267304849 is an apocalyptic number.

It is an amenable number.

51267304849 is a deficient number, since it is larger than the sum of its proper divisors (15122031).

51267304849 is a wasteful number, since it uses less digits than its factorization.

51267304849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15122030.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 51267304849 in words is "fifty-one billion, two hundred sixty-seven million, three hundred four thousand, eight hundred forty-nine".