51505615106 has 16 divisors (see below), whose sum is σ = 85663588608. Its totient is φ = 23027845200.

The previous prime is 51505615103. The next prime is 51505615163. The reversal of 51505615106 is 60151650515.

It is not an unprimeable number, because it can be changed into a prime (51505615103) 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, 19188530 + ... + 19191213.

It is an arithmetic number, because the mean of its divisors is an integer number (5353974288).

Almost surely, 2^51505615106 is an apocalyptic number.

51505615106 is a deficient number, since it is larger than the sum of its proper divisors (34157973502).

51505615106 is a wasteful number, since it uses less digits than its factorization.

51505615106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38379817.

The product of its (nonzero) digits is 22500, while the sum is 35.

The spelling of 51505615106 in words is "fifty-one billion, five hundred five million, six hundred fifteen thousand, one hundred six".