51223312031189 has 2 divisors, whose sum is σ = 51223312031190. Its totient is φ = 51223312031188.

The previous prime is 51223312031173. The next prime is 51223312031207. The reversal of 51223312031189 is 98113021332215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35896478528689 + 15326833502500 = 5991367^2 + 3914950^2 .

It is a cyclic number.

It is not a de Polignac number, because 51223312031189 - 2⁴ = 51223312031173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51223312061189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25611656015594 + 25611656015595.

It is an arithmetic number, because the mean of its divisors is an integer number (25611656015595).

Almost surely, 2^{51223312031189} is an apocalyptic number.

It is an amenable number.

51223312031189 is a deficient number, since it is larger than the sum of its proper divisors (1).

51223312031189 is an equidigital number, since it uses as much as digits as its factorization.

51223312031189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 41.

The spelling of 51223312031189 in words is "fifty-one trillion, two hundred twenty-three billion, three hundred twelve million, thirty-one thousand, one hundred eighty-nine".