51971082623 has 2 divisors, whose sum is σ = 51971082624. Its totient is φ = 51971082622.

The previous prime is 51971082599. The next prime is 51971082643. The reversal of 51971082623 is 32628017915.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51971082623 - 2¹⁴ = 51971066239 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 (51971082643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25985541311 + 25985541312.

It is an arithmetic number, because the mean of its divisors is an integer number (25985541312).

Almost surely, 2^51971082623 is an apocalyptic number.

51971082623 is a deficient number, since it is larger than the sum of its proper divisors (1).

51971082623 is an equidigital number, since it uses as much as digits as its factorization.

51971082623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 51971082623 in words is "fifty-one billion, nine hundred seventy-one million, eighty-two thousand, six hundred twenty-three".