50403765008381 has 2 divisors, whose sum is σ = 50403765008382. Its totient is φ = 50403765008380.

The previous prime is 50403765008239. The next prime is 50403765008419. The reversal of 50403765008381 is 18380056730405.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46145460372025 + 4258304636356 = 6793045^2 + 2063566^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50403765008381 is a prime.

It is a super-2 number, since 2×50403765008381² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50403765005381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25201882504190 + 25201882504191.

It is an arithmetic number, because the mean of its divisors is an integer number (25201882504191).

Almost surely, 2^{50403765008381} is an apocalyptic number.

It is an amenable number.

50403765008381 is a deficient number, since it is larger than the sum of its proper divisors (1).

50403765008381 is an equidigital number, since it uses as much as digits as its factorization.

50403765008381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2419200, while the sum is 50.

The spelling of 50403765008381 in words is "fifty trillion, four hundred three billion, seven hundred sixty-five million, eight thousand, three hundred eighty-one".