51794951189 has 2 divisors, whose sum is σ = 51794951190. Its totient is φ = 51794951188.

The previous prime is 51794951141. The next prime is 51794951261. The reversal of 51794951189 is 98115949715.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29917583089 + 21877368100 = 172967^2 + 147910^2 .

It is a cyclic number.

It is not a de Polignac number, because 51794951189 - 2²⁰ = 51793902613 is a prime.

It is a super-3 number, since 3×51794951189³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51794951389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25897475594 + 25897475595.

It is an arithmetic number, because the mean of its divisors is an integer number (25897475595).

Almost surely, 2^51794951189 is an apocalyptic number.

It is an amenable number.

51794951189 is a deficient number, since it is larger than the sum of its proper divisors (1).

51794951189 is an equidigital number, since it uses as much as digits as its factorization.

51794951189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4082400, while the sum is 59.

The spelling of 51794951189 in words is "fifty-one billion, seven hundred ninety-four million, nine hundred fifty-one thousand, one hundred eighty-nine".