51081579330 has 64 divisors (see below), whose sum is σ = 128428761600. Its totient is φ = 12985539840.

The previous prime is 51081579317. The next prime is 51081579331. The reversal of 51081579330 is 3397518015.

It is not an unprimeable number, because it can be changed into a prime (51081579331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 302881 + ... + 440340.

It is an arithmetic number, because the mean of its divisors is an integer number (2006699400).

Almost surely, 2^51081579330 is an apocalyptic number.

51081579330 is an abundant number, since it is smaller than the sum of its proper divisors (77347182270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51081579330 is a wasteful number, since it uses less digits than its factorization.

51081579330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743339.

The product of its (nonzero) digits is 113400, while the sum is 42.

The spelling of 51081579330 in words is "fifty-one billion, eighty-one million, five hundred seventy-nine thousand, three hundred thirty".