51644233403 has 12 divisors (see below), whose sum is σ = 62013880512. Its totient is φ = 42838533360.

The previous prime is 51644233391. The next prime is 51644233423. The reversal of 51644233403 is 30433244615.

It is not a de Polignac number, because 51644233403 - 2⁴ = 51644233387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51644233423) 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 11 ways as a sum of consecutive naturals, for example, 16997900 + ... + 17000937.

It is an arithmetic number, because the mean of its divisors is an integer number (5167823376).

Almost surely, 2^51644233403 is an apocalyptic number.

51644233403 is a deficient number, since it is larger than the sum of its proper divisors (10369647109).

51644233403 is a wasteful number, since it uses less digits than its factorization.

51644233403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33998882 (or 33998875 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 35.

The spelling of 51644233403 in words is "fifty-one billion, six hundred forty-four million, two hundred thirty-three thousand, four hundred three".