51051011505 has 16 divisors (see below), whose sum is σ = 87964820160. Its totient is φ = 25132805568.

The previous prime is 51051011489. The next prime is 51051011521. The reversal of 51051011505 is 50511015015.

It is an interprime number because it is at equal distance from previous prime (51051011489) and next prime (51051011521).

It is not a de Polignac number, because 51051011505 - 2⁴ = 51051011489 is a prime.

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 130899835 + ... + 130900224.

It is an arithmetic number, because the mean of its divisors is an integer number (5497801260).

Almost surely, 2^51051011505 is an apocalyptic number.

It is an amenable number.

51051011505 is a deficient number, since it is larger than the sum of its proper divisors (36913808655).

51051011505 is a wasteful number, since it uses less digits than its factorization.

51051011505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261800080.

The product of its (nonzero) digits is 625, while the sum is 24.

The spelling of 51051011505 in words is "fifty-one billion, fifty-one million, eleven thousand, five hundred five".