51523495019 has 2 divisors, whose sum is σ = 51523495020. Its totient is φ = 51523495018.

The previous prime is 51523494983. The next prime is 51523495027. The reversal of 51523495019 is 91059432515.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51523495019 - 2¹² = 51523490923 is a prime.

It is a super-3 number, since 3×51523495019³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (51523495039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25761747509 + 25761747510.

It is an arithmetic number, because the mean of its divisors is an integer number (25761747510).

Almost surely, 2^51523495019 is an apocalyptic number.

51523495019 is a deficient number, since it is larger than the sum of its proper divisors (1).

51523495019 is an equidigital number, since it uses as much as digits as its factorization.

51523495019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 243000, while the sum is 44.

The spelling of 51523495019 in words is "fifty-one billion, five hundred twenty-three million, four hundred ninety-five thousand, nineteen".