51208030187 has 8 divisors (see below), whose sum is σ = 51385967136. Its totient is φ = 51030396352.

The previous prime is 51208030183. The next prime is 51208030193. The reversal of 51208030187 is 78103080215.

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

It is a cyclic number.

It is not a de Polignac number, because 51208030187 - 2² = 51208030183 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51208030183) 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, 265343 + ... + 415719.

It is an arithmetic number, because the mean of its divisors is an integer number (6423245892).

Almost surely, 2^51208030187 is an apocalyptic number.

51208030187 is a deficient number, since it is larger than the sum of its proper divisors (177936949).

51208030187 is a wasteful number, since it uses less digits than its factorization.

51208030187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151557.

The product of its (nonzero) digits is 13440, while the sum is 35.

The spelling of 51208030187 in words is "fifty-one billion, two hundred eight million, thirty thousand, one hundred eighty-seven".