50556010994221 has 2 divisors, whose sum is σ = 50556010994222. Its totient is φ = 50556010994220.

The previous prime is 50556010994197. The next prime is 50556010994297. The reversal of 50556010994221 is 12249901065505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43494209660196 + 7061801334025 = 6595014^2 + 2657405^2 .

It is a cyclic number.

It is not a de Polignac number, because 50556010994221 - 2⁴³ = 41759917972013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50556010997221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25278005497110 + 25278005497111.

It is an arithmetic number, because the mean of its divisors is an integer number (25278005497111).

Almost surely, 2^{50556010994221} is an apocalyptic number.

It is an amenable number.

50556010994221 is a deficient number, since it is larger than the sum of its proper divisors (1).

50556010994221 is an equidigital number, since it uses as much as digits as its factorization.

50556010994221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972000, while the sum is 49.

The spelling of 50556010994221 in words is "fifty trillion, five hundred fifty-six billion, ten million, nine hundred ninety-four thousand, two hundred twenty-one".