51151605971 has 2 divisors, whose sum is σ = 51151605972. Its totient is φ = 51151605970.

The previous prime is 51151605931. The next prime is 51151606031. The reversal of 51151605971 is 17950615115.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51151605971 is a prime.

It is not a weakly prime, because it can be changed into another prime (51151605931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25575802985 + 25575802986.

It is an arithmetic number, because the mean of its divisors is an integer number (25575802986).

Almost surely, 2^51151605971 is an apocalyptic number.

51151605971 is a deficient number, since it is larger than the sum of its proper divisors (1).

51151605971 is an equidigital number, since it uses as much as digits as its factorization.

51151605971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47250, while the sum is 41.

The spelling of 51151605971 in words is "fifty-one billion, one hundred fifty-one million, six hundred five thousand, nine hundred seventy-one".