51113031377 has 2 divisors, whose sum is σ = 51113031378. Its totient is φ = 51113031376.

The previous prime is 51113031331. The next prime is 51113031379. The reversal of 51113031377 is 77313031115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32558232721 + 18554798656 = 180439^2 + 136216^2 .

It is a cyclic number.

It is not a de Polignac number, because 51113031377 - 2⁸ = 51113031121 is a prime.

It is a super-2 number, since 2×51113031377² (a number of 22 digits) contains 22 as substring.

Together with 51113031379, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51113031379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25556515688 + 25556515689.

It is an arithmetic number, because the mean of its divisors is an integer number (25556515689).

Almost surely, 2^51113031377 is an apocalyptic number.

It is an amenable number.

51113031377 is a deficient number, since it is larger than the sum of its proper divisors (1).

51113031377 is an equidigital number, since it uses as much as digits as its factorization.

51113031377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6615, while the sum is 32.

The spelling of 51113031377 in words is "fifty-one billion, one hundred thirteen million, thirty-one thousand, three hundred seventy-seven".