51556640210147 has 2 divisors, whose sum is σ = 51556640210148. Its totient is φ = 51556640210146.

The previous prime is 51556640210093. The next prime is 51556640210221. The reversal of 51556640210147 is 74101204665515.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51556640210147 - 2⁶ = 51556640210083 is a prime.

It is not a weakly prime, because it can be changed into another prime (51556640215147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25778320105073 + 25778320105074.

It is an arithmetic number, because the mean of its divisors is an integer number (25778320105074).

Almost surely, 2^{51556640210147} is an apocalyptic number.

51556640210147 is a deficient number, since it is larger than the sum of its proper divisors (1).

51556640210147 is an equidigital number, since it uses as much as digits as its factorization.

51556640210147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008000, while the sum is 47.

The spelling of 51556640210147 in words is "fifty-one trillion, five hundred fifty-six billion, six hundred forty million, two hundred ten thousand, one hundred forty-seven".