51609441338 has 64 divisors (see below), whose sum is σ = 97652459520. Its totient is φ = 19909858752.

The previous prime is 51609441337. The next prime is 51609441341. The reversal of 51609441338 is 83314490615.

It is not an unprimeable number, because it can be changed into a prime (51609441337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5152331 + ... + 5162337.

It is an arithmetic number, because the mean of its divisors is an integer number (1525819680).

Almost surely, 2^51609441338 is an apocalyptic number.

51609441338 is a deficient number, since it is larger than the sum of its proper divisors (46043018182).

51609441338 is a wasteful number, since it uses less digits than its factorization.

51609441338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10731.

The product of its (nonzero) digits is 311040, while the sum is 44.

The spelling of 51609441338 in words is "fifty-one billion, six hundred nine million, four hundred forty-one thousand, three hundred thirty-eight".