51061502507 has 8 divisors (see below), whose sum is σ = 51729177600. Its totient is φ = 50394360744.

The previous prime is 51061502497. The next prime is 51061502537. The reversal of 51061502507 is 70520516015.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51061502507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51061502537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61244 + ... + 325382.

It is an arithmetic number, because the mean of its divisors is an integer number (6466147200).

Almost surely, 2^51061502507 is an apocalyptic number.

51061502507 is a deficient number, since it is larger than the sum of its proper divisors (667675093).

51061502507 is a wasteful number, since it uses less digits than its factorization.

51061502507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266665.

The product of its (nonzero) digits is 10500, while the sum is 32.

The spelling of 51061502507 in words is "fifty-one billion, sixty-one million, five hundred two thousand, five hundred seven".