51900648347 has 2 divisors, whose sum is σ = 51900648348. Its totient is φ = 51900648346.

The previous prime is 51900648343. The next prime is 51900648379. The reversal of 51900648347 is 74384600915.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51900648347 - 2² = 51900648343 is a prime.

It is not a weakly prime, because it can be changed into another prime (51900648343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25950324173 + 25950324174.

It is an arithmetic number, because the mean of its divisors is an integer number (25950324174).

Almost surely, 2^51900648347 is an apocalyptic number.

51900648347 is a deficient number, since it is larger than the sum of its proper divisors (1).

51900648347 is an equidigital number, since it uses as much as digits as its factorization.

51900648347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 51900648347 in words is "fifty-one billion, nine hundred million, six hundred forty-eight thousand, three hundred forty-seven".