51630700027 has 4 divisors (see below), whose sum is σ = 51646344256. Its totient is φ = 51615055800.

The previous prime is 51630700013. The next prime is 51630700031. The reversal of 51630700027 is 72000703615.

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-51630700027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51630700007) 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, 7817163 + ... + 7823764.

It is an arithmetic number, because the mean of its divisors is an integer number (12911586064).

Almost surely, 2^51630700027 is an apocalyptic number.

51630700027 is a deficient number, since it is larger than the sum of its proper divisors (15644229).

51630700027 is a wasteful number, since it uses less digits than its factorization.

51630700027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15644228.

The product of its (nonzero) digits is 8820, while the sum is 31.

The spelling of 51630700027 in words is "fifty-one billion, six hundred thirty million, seven hundred thousand, twenty-seven".