3554842648781 has 2 divisors, whose sum is σ = 3554842648782. Its totient is φ = 3554842648780.

The previous prime is 3554842648757. The next prime is 3554842648783. The reversal of 3554842648781 is 1878462484553.

3554842648781 is digitally balanced in base 3, 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., 3550831453225 + 4011195556 = 1884365^2 + 63334^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3554842648781 is a prime.

It is a super-2 number, since 2×3554842648781² (a number of 26 digits) contains 22 as substring.

Together with 3554842648783, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3554842648783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1777421324390 + 1777421324391.

It is an arithmetic number, because the mean of its divisors is an integer number (1777421324391).

Almost surely, 2^{3554842648781} is an apocalyptic number.

It is an amenable number.

3554842648781 is a deficient number, since it is larger than the sum of its proper divisors (1).

3554842648781 is an equidigital number, since it uses as much as digits as its factorization.

3554842648781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 206438400, while the sum is 65.

The spelling of 3554842648781 in words is "three trillion, five hundred fifty-four billion, eight hundred forty-two million, six hundred forty-eight thousand, seven hundred eighty-one".