51642713480231 has 2 divisors, whose sum is σ = 51642713480232. Its totient is φ = 51642713480230.

The previous prime is 51642713480147. The next prime is 51642713480249. The reversal of 51642713480231 is 13208431724615.

51642713480231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51642713480231 is a prime.

It is a super-2 number, since 2×51642713480231² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51642713480251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25821356740115 + 25821356740116.

It is an arithmetic number, because the mean of its divisors is an integer number (25821356740116).

Almost surely, 2^{51642713480231} is an apocalyptic number.

51642713480231 is a deficient number, since it is larger than the sum of its proper divisors (1).

51642713480231 is an equidigital number, since it uses as much as digits as its factorization.

51642713480231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 967680, while the sum is 47.

The spelling of 51642713480231 in words is "fifty-one trillion, six hundred forty-two billion, seven hundred thirteen million, four hundred eighty thousand, two hundred thirty-one".