3551474088581 has 4 divisors (see below), whose sum is σ = 3601494850464. Its totient is φ = 3501453326700.

The previous prime is 3551474088557. The next prime is 3551474088599. The reversal of 3551474088581 is 1858804741553.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3551474088581 is a prime.

It is a super-2 number, since 2×3551474088581² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3551474088581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3551474088521) 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, 25010380835 + ... + 25010380976.

It is an arithmetic number, because the mean of its divisors is an integer number (900373712616).

Almost surely, 2^{3551474088581} is an apocalyptic number.

It is an amenable number.

3551474088581 is a deficient number, since it is larger than the sum of its proper divisors (50020761883).

3551474088581 is an equidigital number, since it uses as much as digits as its factorization.

3551474088581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50020761882.

The product of its (nonzero) digits is 21504000, while the sum is 59.

The spelling of 3551474088581 in words is "three trillion, five hundred fifty-one billion, four hundred seventy-four million, eighty-eight thousand, five hundred eighty-one".