51491129354 has 64 divisors (see below), whose sum is σ = 96387563520. Its totient is φ = 20129544960.

The previous prime is 51491129329. The next prime is 51491129359. The reversal of 51491129354 is 45392119415.

It is not an unprimeable number, because it can be changed into a prime (51491129359) 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, 971159 + ... + 1022805.

It is an arithmetic number, because the mean of its divisors is an integer number (1506055680).

Almost surely, 2^51491129354 is an apocalyptic number.

51491129354 is a deficient number, since it is larger than the sum of its proper divisors (44896434166).

51491129354 is a wasteful number, since it uses less digits than its factorization.

51491129354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51803.

The product of its digits is 194400, while the sum is 44.

The spelling of 51491129354 in words is "fifty-one billion, four hundred ninety-one million, one hundred twenty-nine thousand, three hundred fifty-four".