51151322532505 has 8 divisors (see below), whose sum is σ = 66103247580552. Its totient is φ = 37773284331648.

The previous prime is 51151322532503. The next prime is 51151322532529. The reversal of 51151322532505 is 50523522315115.

It can be written as a sum of positive squares in 4 ways, for example, as 9068843148304 + 42082479384201 = 3011452^2 + 6487101^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 51151322532505 - 2¹ = 51151322532503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51151322532503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 393471711724 + ... + 393471711853.

It is an arithmetic number, because the mean of its divisors is an integer number (8262905947569).

Almost surely, 2^{51151322532505} is an apocalyptic number.

It is an amenable number.

51151322532505 is a deficient number, since it is larger than the sum of its proper divisors (14951925048047).

51151322532505 is a wasteful number, since it uses less digits than its factorization.

51151322532505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786943423595.

The product of its (nonzero) digits is 225000, while the sum is 40.

The spelling of 51151322532505 in words is "fifty-one trillion, one hundred fifty-one billion, three hundred twenty-two million, five hundred thirty-two thousand, five hundred five".