3551540881787 has 2 divisors, whose sum is σ = 3551540881788. Its totient is φ = 3551540881786.

The previous prime is 3551540881751. The next prime is 3551540881841. The reversal of 3551540881787 is 7871880451553.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3551540881787 - 2⁶ = 3551540881723 is a prime.

It is a super-2 number, since 2×3551540881787² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3551540881087) 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, 1775770440893 + 1775770440894.

It is an arithmetic number, because the mean of its divisors is an integer number (1775770440894).

Almost surely, 2^{3551540881787} is an apocalyptic number.

3551540881787 is a deficient number, since it is larger than the sum of its proper divisors (1).

3551540881787 is an equidigital number, since it uses as much as digits as its factorization.

3551540881787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37632000, while the sum is 62.

The spelling of 3551540881787 in words is "three trillion, five hundred fifty-one billion, five hundred forty million, eight hundred eighty-one thousand, seven hundred eighty-seven".