3551531278679 has 4 divisors (see below), whose sum is σ = 3558508747320. Its totient is φ = 3544553810040.

The previous prime is 3551531278639. The next prime is 3551531278697. The reversal of 3551531278679 is 9768721351553.

3551531278679 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3551531278679 - 2¹⁶ = 3551531213143 is a prime.

It is a super-2 number, since 2×3551531278679² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3551531278639) 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 in 3 ways as a sum of consecutive naturals, for example, 3488733557 + ... + 3488734574.

It is an arithmetic number, because the mean of its divisors is an integer number (889627186830).

Almost surely, 2^{3551531278679} is an apocalyptic number.

3551531278679 is a deficient number, since it is larger than the sum of its proper divisors (6977468641).

3551531278679 is an equidigital number, since it uses as much as digits as its factorization.

3551531278679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6977468640.

The product of its digits is 47628000, while the sum is 62.

The spelling of 3551531278679 in words is "three trillion, five hundred fifty-one billion, five hundred thirty-one million, two hundred seventy-eight thousand, six hundred seventy-nine".