51155544115 has 8 divisors (see below), whose sum is σ = 66108703248. Its totient is φ = 37776401760.

The previous prime is 51155544073. The next prime is 51155544119. The reversal of 51155544115 is 51144555115.

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

It is not a de Polignac number, because 51155544115 - 2⁹ = 51155543603 is a prime.

It is a super-2 number, since 2×51155544115² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51155544119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 393504121 + ... + 393504250.

It is an arithmetic number, because the mean of its divisors is an integer number (8263587906).

Almost surely, 2^51155544115 is an apocalyptic number.

51155544115 is a deficient number, since it is larger than the sum of its proper divisors (14953159133).

51155544115 is a wasteful number, since it uses less digits than its factorization.

51155544115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787008389.

The product of its digits is 50000, while the sum is 37.

The spelling of 51155544115 in words is "fifty-one billion, one hundred fifty-five million, five hundred forty-four thousand, one hundred fifteen".