50615351621 has 2 divisors, whose sum is σ = 50615351622. Its totient is φ = 50615351620.

The previous prime is 50615351569. The next prime is 50615351641. The reversal of 50615351621 is 12615351605.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47049948100 + 3565403521 = 216910^2 + 59711^2 .

It is a cyclic number.

It is not a de Polignac number, because 50615351621 - 2²⁶ = 50548242757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50615351641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25307675810 + 25307675811.

It is an arithmetic number, because the mean of its divisors is an integer number (25307675811).

Almost surely, 2^50615351621 is an apocalyptic number.

It is an amenable number.

50615351621 is a deficient number, since it is larger than the sum of its proper divisors (1).

50615351621 is an equidigital number, since it uses as much as digits as its factorization.

50615351621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27000, while the sum is 35.

The spelling of 50615351621 in words is "fifty billion, six hundred fifteen million, three hundred fifty-one thousand, six hundred twenty-one".