103774337406821 has 2 divisors, whose sum is σ = 103774337406822. Its totient is φ = 103774337406820.

The previous prime is 103774337406647. The next prime is 103774337406833. The reversal of 103774337406821 is 128604733477301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100331494266721 + 3442843140100 = 10016561^2 + 1855490^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103774337406821 is a prime.

It is a super-2 number, since 2×103774337406821² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103774337405821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51887168703410 + 51887168703411.

It is an arithmetic number, because the mean of its divisors is an integer number (51887168703411).

Almost surely, 2^{103774337406821} is an apocalyptic number.

It is an amenable number.

103774337406821 is a deficient number, since it is larger than the sum of its proper divisors (1).

103774337406821 is an equidigital number, since it uses as much as digits as its factorization.

103774337406821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14224896, while the sum is 56.

The spelling of 103774337406821 in words is "one hundred three trillion, seven hundred seventy-four billion, three hundred thirty-seven million, four hundred six thousand, eight hundred twenty-one".