3551355197861 has 8 divisors (see below), whose sum is σ = 3760321143744. Its totient is φ = 3342396218560.

The previous prime is 3551355197857. The next prime is 3551355197867. The reversal of 3551355197861 is 1687915531553.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3551355197861 - 2² = 3551355197857 is a prime.

It is a super-2 number, since 2×3551355197861² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3551355197861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3551355197867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 673385 + ... + 2748846.

It is an arithmetic number, because the mean of its divisors is an integer number (470040142968).

Almost surely, 2^{3551355197861} is an apocalyptic number.

It is an amenable number.

3551355197861 is a deficient number, since it is larger than the sum of its proper divisors (208965945883).

3551355197861 is a wasteful number, since it uses less digits than its factorization.

3551355197861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3483291.

The product of its digits is 17010000, while the sum is 59.

The spelling of 3551355197861 in words is "three trillion, five hundred fifty-one billion, three hundred fifty-five million, one hundred ninety-seven thousand, eight hundred sixty-one".