51149543115 has 16 divisors (see below), whose sum is σ = 89279202816. Its totient is φ = 24799778400.

The previous prime is 51149543113. The next prime is 51149543177. The reversal of 51149543115 is 51134594115.

It is not a de Polignac number, because 51149543115 - 2¹ = 51149543113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51149543113) 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 15 ways as a sum of consecutive naturals, for example, 154998451 + ... + 154998780.

It is an arithmetic number, because the mean of its divisors is an integer number (5579950176).

Almost surely, 2^51149543115 is an apocalyptic number.

51149543115 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51149543115 is a deficient number, since it is larger than the sum of its proper divisors (38129659701).

51149543115 is a wasteful number, since it uses less digits than its factorization.

51149543115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309997250.

The product of its digits is 54000, while the sum is 39.

The spelling of 51149543115 in words is "fifty-one billion, one hundred forty-nine million, five hundred forty-three thousand, one hundred fifteen".