51973923187 has 2 divisors, whose sum is σ = 51973923188. Its totient is φ = 51973923186.

The previous prime is 51973923167. The next prime is 51973923257. The reversal of 51973923187 is 78132937915.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51973923187 - 2²⁷ = 51839705459 is a prime.

It is not a weakly prime, because it can be changed into another prime (51973923167) 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, 25986961593 + 25986961594.

It is an arithmetic number, because the mean of its divisors is an integer number (25986961594).

Almost surely, 2^51973923187 is an apocalyptic number.

51973923187 is a deficient number, since it is larger than the sum of its proper divisors (1).

51973923187 is an equidigital number, since it uses as much as digits as its factorization.

51973923187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2857680, while the sum is 55.

It can be divided in two parts, 51973923 and 187, that added together give a triangular number (51974110 = T₁₀₁₉₅).

The spelling of 51973923187 in words is "fifty-one billion, nine hundred seventy-three million, nine hundred twenty-three thousand, one hundred eighty-seven".