3551448668437 has 2 divisors, whose sum is σ = 3551448668438. Its totient is φ = 3551448668436.

The previous prime is 3551448668429. The next prime is 3551448668461. The reversal of 3551448668437 is 7348668441553.

3551448668437 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3451517446276 + 99931222161 = 1857826^2 + 316119^2 .

It is a cyclic number.

It is not a de Polignac number, because 3551448668437 - 2³ = 3551448668429 is a prime.

It is a super-2 number, since 2×3551448668437² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3551448668477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1775724334218 + 1775724334219.

It is an arithmetic number, because the mean of its divisors is an integer number (1775724334219).

Almost surely, 2^{3551448668437} is an apocalyptic number.

It is an amenable number.

3551448668437 is a deficient number, since it is larger than the sum of its proper divisors (1).

3551448668437 is an equidigital number, since it uses as much as digits as its factorization.

3551448668437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 232243200, while the sum is 64.

The spelling of 3551448668437 in words is "three trillion, five hundred fifty-one billion, four hundred forty-eight million, six hundred sixty-eight thousand, four hundred thirty-seven".