51116551345 has 8 divisors (see below), whose sum is σ = 61351151400. Its totient is φ = 40885714560.

The previous prime is 51116551327. The next prime is 51116551357. The reversal of 51116551345 is 54315561115.

It can be written as a sum of positive squares in 4 ways, for example, as 300571569 + 50815979776 = 17337^2 + 225424^2 .

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

It is not a de Polignac number, because 51116551345 - 2²⁹ = 50579680433 is a prime.

It is a super-2 number, since 2×51116551345² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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, 910846 + ... + 965335.

It is an arithmetic number, because the mean of its divisors is an integer number (7668893925).

Almost surely, 2^51116551345 is an apocalyptic number.

It is an amenable number.

51116551345 is a deficient number, since it is larger than the sum of its proper divisors (10234600055).

51116551345 is a wasteful number, since it uses less digits than its factorization.

51116551345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1881635.

The product of its digits is 45000, while the sum is 37.

The spelling of 51116551345 in words is "fifty-one billion, one hundred sixteen million, five hundred fifty-one thousand, three hundred forty-five".