51154735551447 has 32 divisors (see below), whose sum is σ = 74538633346560. Its totient is φ = 30948000336000.

The previous prime is 51154735551421. The next prime is 51154735551461. The reversal of 51154735551447 is 74415553745115.

It is not a de Polignac number, because 51154735551447 - 2¹² = 51154735547351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51154735551467) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85010829 + ... + 85610457.

It is an arithmetic number, because the mean of its divisors is an integer number (2329332292080).

Almost surely, 2^{51154735551447} is an apocalyptic number.

51154735551447 is a deficient number, since it is larger than the sum of its proper divisors (23383897795113).

51154735551447 is a wasteful number, since it uses less digits than its factorization.

51154735551447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604215.

The product of its digits is 29400000, while the sum is 57.

The spelling of 51154735551447 in words is "fifty-one trillion, one hundred fifty-four billion, seven hundred thirty-five million, five hundred fifty-one thousand, four hundred forty-seven".