51498198559 has 2 divisors, whose sum is σ = 51498198560. Its totient is φ = 51498198558.

The previous prime is 51498198547. The next prime is 51498198571. The reversal of 51498198559 is 95589189415.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (51498198547) and next prime (51498198571).

It is a cyclic number.

It is not a de Polignac number, because 51498198559 - 2⁷ = 51498198431 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51498198559.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51498198529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25749099279 + 25749099280.

It is an arithmetic number, because the mean of its divisors is an integer number (25749099280).

Almost surely, 2^51498198559 is an apocalyptic number.

51498198559 is a deficient number, since it is larger than the sum of its proper divisors (1).

51498198559 is an equidigital number, since it uses as much as digits as its factorization.

51498198559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328000, while the sum is 64.

The spelling of 51498198559 in words is "fifty-one billion, four hundred ninety-eight million, one hundred ninety-eight thousand, five hundred fifty-nine".