51051011506 has 12 divisors (see below), whose sum is σ = 84170883006. Its totient is φ = 23205005120.

The previous prime is 51051011489. The next prime is 51051011521. The reversal of 51051011506 is 60511015015.

It can be written as a sum of positive squares in only one way, i.e., 48182445025 + 2868566481 = 219505^2 + 53559^2 .

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 5 ways as a sum of consecutive naturals, for example, 105477055 + ... + 105477538.

Almost surely, 2^51051011506 is an apocalyptic number.

51051011506 is a deficient number, since it is larger than the sum of its proper divisors (33119871500).

51051011506 is a wasteful number, since it uses less digits than its factorization.

51051011506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210954617 (or 210954606 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 25.

The spelling of 51051011506 in words is "fifty-one billion, fifty-one million, eleven thousand, five hundred six".