51373584991 has 2 divisors, whose sum is σ = 51373584992. Its totient is φ = 51373584990.

The previous prime is 51373584931. The next prime is 51373585007. The reversal of 51373584991 is 19948537315.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51373584991 - 2²⁹ = 50836714079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51373584931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25686792495 + 25686792496.

It is an arithmetic number, because the mean of its divisors is an integer number (25686792496).

Almost surely, 2^51373584991 is an apocalyptic number.

51373584991 is a deficient number, since it is larger than the sum of its proper divisors (1).

51373584991 is an equidigital number, since it uses as much as digits as its factorization.

51373584991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4082400, while the sum is 55.

The spelling of 51373584991 in words is "fifty-one billion, three hundred seventy-three million, five hundred eighty-four thousand, nine hundred ninety-one".