3549481030991 has 32 divisors (see below), whose sum is σ = 4503158903808. Its totient is φ = 2725967946240.

The previous prime is 3549481030961. The next prime is 3549481030999. The reversal of 3549481030991 is 1990301849453.

It is not a de Polignac number, because 3549481030991 - 2¹⁰ = 3549481029967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3549481030999) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2495600 + ... + 3650613.

It is an arithmetic number, because the mean of its divisors is an integer number (140723715744).

Almost surely, 2^{3549481030991} is an apocalyptic number.

3549481030991 is a deficient number, since it is larger than the sum of its proper divisors (953677872817).

3549481030991 is a wasteful number, since it uses less digits than its factorization.

3549481030991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6146471.

The product of its (nonzero) digits is 4199040, while the sum is 56.

The spelling of 3549481030991 in words is "three trillion, five hundred forty-nine billion, four hundred eighty-one million, thirty thousand, nine hundred ninety-one".