51432471547 has 2 divisors, whose sum is σ = 51432471548. Its totient is φ = 51432471546.

The previous prime is 51432471521. The next prime is 51432471581. The reversal of 51432471547 is 74517423415.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51432471547 is a prime.

It is not a weakly prime, because it can be changed into another prime (51432471847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25716235773 + 25716235774.

It is an arithmetic number, because the mean of its divisors is an integer number (25716235774).

Almost surely, 2^51432471547 is an apocalyptic number.

51432471547 is a deficient number, since it is larger than the sum of its proper divisors (1).

51432471547 is an equidigital number, since it uses as much as digits as its factorization.

51432471547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 470400, while the sum is 43.

The spelling of 51432471547 in words is "fifty-one billion, four hundred thirty-two million, four hundred seventy-one thousand, five hundred forty-seven".