51612324457 has 2 divisors, whose sum is σ = 51612324458. Its totient is φ = 51612324456.

The previous prime is 51612324433. The next prime is 51612324481. The reversal of 51612324457 is 75442321615.

It is a balanced prime because it is at equal distance from previous prime (51612324433) and next prime (51612324481).

It can be written as a sum of positive squares in only one way, i.e., 32082541456 + 19529783001 = 179116^2 + 139749^2 .

It is a cyclic number.

It is not a de Polignac number, because 51612324457 - 2¹¹ = 51612322409 is a prime.

It is not a weakly prime, because it can be changed into another prime (51612324427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25806162228 + 25806162229.

It is an arithmetic number, because the mean of its divisors is an integer number (25806162229).

Almost surely, 2^51612324457 is an apocalyptic number.

It is an amenable number.

51612324457 is a deficient number, since it is larger than the sum of its proper divisors (1).

51612324457 is an equidigital number, since it uses as much as digits as its factorization.

51612324457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 40.

The spelling of 51612324457 in words is "fifty-one billion, six hundred twelve million, three hundred twenty-four thousand, four hundred fifty-seven".