51966944501 has 2 divisors, whose sum is σ = 51966944502. Its totient is φ = 51966944500.

The previous prime is 51966944383. The next prime is 51966944507. The reversal of 51966944501 is 10544966915.

51966944501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27654027025 + 24312917476 = 166295^2 + 155926^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51966944501 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51966944501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51966944507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25983472250 + 25983472251.

It is an arithmetic number, because the mean of its divisors is an integer number (25983472251).

Almost surely, 2^51966944501 is an apocalyptic number.

It is an amenable number.

51966944501 is a deficient number, since it is larger than the sum of its proper divisors (1).

51966944501 is an equidigital number, since it uses as much as digits as its factorization.

51966944501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1166400, while the sum is 50.

The spelling of 51966944501 in words is "fifty-one billion, nine hundred sixty-six million, nine hundred forty-four thousand, five hundred one".