51613351511 has 2 divisors, whose sum is σ = 51613351512. Its totient is φ = 51613351510.

The previous prime is 51613351507. The next prime is 51613351567. The reversal of 51613351511 is 11515331615.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51613351511 - 2² = 51613351507 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51613351501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25806675755 + 25806675756.

It is an arithmetic number, because the mean of its divisors is an integer number (25806675756).

Almost surely, 2^51613351511 is an apocalyptic number.

51613351511 is a deficient number, since it is larger than the sum of its proper divisors (1).

51613351511 is an equidigital number, since it uses as much as digits as its factorization.

51613351511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6750, while the sum is 32.

The spelling of 51613351511 in words is "fifty-one billion, six hundred thirteen million, three hundred fifty-one thousand, five hundred eleven".