51011050999 has 2 divisors, whose sum is σ = 51011051000. Its totient is φ = 51011050998.

The previous prime is 51011050943. The next prime is 51011051099. The reversal of 51011050999 is 99905011015.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51011050999 - 2⁹ = 51011050487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51011050499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25505525499 + 25505525500.

It is an arithmetic number, because the mean of its divisors is an integer number (25505525500).

Almost surely, 2^51011050999 is an apocalyptic number.

51011050999 is a deficient number, since it is larger than the sum of its proper divisors (1).

51011050999 is an equidigital number, since it uses as much as digits as its factorization.

51011050999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18225, while the sum is 40.

The spelling of 51011050999 in words is "fifty-one billion, eleven million, fifty thousand, nine hundred ninety-nine".