51421547536111 has 2 divisors, whose sum is σ = 51421547536112. Its totient is φ = 51421547536110.

The previous prime is 51421547536103. The next prime is 51421547536129. The reversal of 51421547536111 is 11163574512415.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51421547536111 - 2³ = 51421547536103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51421547536511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25710773768055 + 25710773768056.

It is an arithmetic number, because the mean of its divisors is an integer number (25710773768056).

Almost surely, 2^{51421547536111} is an apocalyptic number.

51421547536111 is a deficient number, since it is larger than the sum of its proper divisors (1).

51421547536111 is an equidigital number, since it uses as much as digits as its factorization.

51421547536111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 504000, while the sum is 46.

The spelling of 51421547536111 in words is "fifty-one trillion, four hundred twenty-one billion, five hundred forty-seven million, five hundred thirty-six thousand, one hundred eleven".