51594415619 has 2 divisors, whose sum is σ = 51594415620. Its totient is φ = 51594415618.

The previous prime is 51594415589. The next prime is 51594415711. The reversal of 51594415619 is 91651449515.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51594415619 - 2⁸ = 51594415363 is a prime.

It is a super-2 number, since 2×51594415619² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51594415919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25797207809 + 25797207810.

It is an arithmetic number, because the mean of its divisors is an integer number (25797207810).

Almost surely, 2^51594415619 is an apocalyptic number.

51594415619 is a deficient number, since it is larger than the sum of its proper divisors (1).

51594415619 is an equidigital number, since it uses as much as digits as its factorization.

51594415619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 972000, while the sum is 50.

The spelling of 51594415619 in words is "fifty-one billion, five hundred ninety-four million, four hundred fifteen thousand, six hundred nineteen".