51330366401 has 4 divisors (see below), whose sum is σ = 52986184704. Its totient is φ = 49674548100.

The previous prime is 51330366391. The next prime is 51330366407. The reversal of 51330366401 is 10466303315.

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 51330366401 - 2¹⁰ = 51330365377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51330366407) 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, 827909105 + ... + 827909166.

It is an arithmetic number, because the mean of its divisors is an integer number (13246546176).

Almost surely, 2^51330366401 is an apocalyptic number.

It is an amenable number.

51330366401 is a deficient number, since it is larger than the sum of its proper divisors (1655818303).

51330366401 is a wasteful number, since it uses less digits than its factorization.

51330366401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1655818302.

The product of its (nonzero) digits is 19440, while the sum is 32.

Adding to 51330366401 its reverse (10466303315), we get a palindrome (61796669716).

The spelling of 51330366401 in words is "fifty-one billion, three hundred thirty million, three hundred sixty-six thousand, four hundred one".