51259095091 has 2 divisors, whose sum is σ = 51259095092. Its totient is φ = 51259095090.

The previous prime is 51259095073. The next prime is 51259095137. The reversal of 51259095091 is 19059095215.

It is an a-pointer prime, because the next prime (51259095137) can be obtained adding 51259095091 to its sum of digits (46).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51259095091 - 2⁷ = 51259094963 is a prime.

It is not a weakly prime, because it can be changed into another prime (51259995091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25629547545 + 25629547546.

It is an arithmetic number, because the mean of its divisors is an integer number (25629547546).

Almost surely, 2^51259095091 is an apocalyptic number.

51259095091 is a deficient number, since it is larger than the sum of its proper divisors (1).

51259095091 is an equidigital number, since it uses as much as digits as its factorization.

51259095091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 182250, while the sum is 46.

The spelling of 51259095091 in words is "fifty-one billion, two hundred fifty-nine million, ninety-five thousand, ninety-one".