51151231115546 has 8 divisors (see below), whose sum is σ = 77984663832084. Its totient is φ = 25156343171520.

The previous prime is 51151231115531. The next prime is 51151231115549. The reversal of 51151231115546 is 64551113215115.

51151231115546 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 47432986639921 + 3718244475625 = 6887161^2 + 1928275^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (51151231115549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209636192975 + ... + 209636193218.

Almost surely, 2^{51151231115546} is an apocalyptic number.

51151231115546 is a deficient number, since it is larger than the sum of its proper divisors (26833432716538).

51151231115546 is a wasteful number, since it uses less digits than its factorization.

51151231115546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419272386256.

The product of its digits is 90000, while the sum is 41.

The spelling of 51151231115546 in words is "fifty-one trillion, one hundred fifty-one billion, two hundred thirty-one million, one hundred fifteen thousand, five hundred forty-six".