51179385599 has 2 divisors, whose sum is σ = 51179385600. Its totient is φ = 51179385598.

The previous prime is 51179385589. The next prime is 51179385661. The reversal of 51179385599 is 99558397115.

It is an a-pointer prime, because the next prime (51179385661) can be obtained adding 51179385599 to its sum of digits (62).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51179385599 is a prime.

It is a super-2 number, since 2×51179385599² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51179385589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25589692799 + 25589692800.

It is an arithmetic number, because the mean of its divisors is an integer number (25589692800).

Almost surely, 2^51179385599 is an apocalyptic number.

51179385599 is a deficient number, since it is larger than the sum of its proper divisors (1).

51179385599 is an equidigital number, since it uses as much as digits as its factorization.

51179385599 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15309000, while the sum is 62.

The spelling of 51179385599 in words is "fifty-one billion, one hundred seventy-nine million, three hundred eighty-five thousand, five hundred ninety-nine".