51303917107 has 4 divisors (see below), whose sum is σ = 51304988776. Its totient is φ = 51302845440.

The previous prime is 51303917053. The next prime is 51303917113. The reversal of 51303917107 is 70171930315.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51303917107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51303927107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 460494 + ... + 560947.

It is an arithmetic number, because the mean of its divisors is an integer number (12826247194).

Almost surely, 2^51303917107 is an apocalyptic number.

51303917107 is a deficient number, since it is larger than the sum of its proper divisors (1071669).

51303917107 is a wasteful number, since it uses less digits than its factorization.

51303917107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071668.

The product of its (nonzero) digits is 19845, while the sum is 37.

The spelling of 51303917107 in words is "fifty-one billion, three hundred three million, nine hundred seventeen thousand, one hundred seven".