51400505047 has 2 divisors, whose sum is σ = 51400505048. Its totient is φ = 51400505046.

The previous prime is 51400505027. The next prime is 51400505053. The reversal of 51400505047 is 74050500415.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51400505047 - 2¹¹ = 51400502999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51400505027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25700252523 + 25700252524.

It is an arithmetic number, because the mean of its divisors is an integer number (25700252524).

Almost surely, 2^51400505047 is an apocalyptic number.

51400505047 is a deficient number, since it is larger than the sum of its proper divisors (1).

51400505047 is an equidigital number, since it uses as much as digits as its factorization.

51400505047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14000, while the sum is 31.

The spelling of 51400505047 in words is "fifty-one billion, four hundred million, five hundred five thousand, forty-seven".