3551561515401 has 8 divisors (see below), whose sum is σ = 4735465176000. Its totient is φ = 2367682765872.

The previous prime is 3551561515393. The next prime is 3551561515417. The reversal of 3551561515401 is 1045151651553.

It is a happy number.

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

It is not a de Polignac number, because 3551561515401 - 2³ = 3551561515393 is a prime.

It is a super-2 number, since 2×3551561515401² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3551561517401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5892526 + ... + 6467223.

It is an arithmetic number, because the mean of its divisors is an integer number (591933147000).

Almost surely, 2^{3551561515401} is an apocalyptic number.

It is an amenable number.

3551561515401 is a deficient number, since it is larger than the sum of its proper divisors (1183903660599).

3551561515401 is a wasteful number, since it uses less digits than its factorization.

3551561515401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12455535.

The product of its (nonzero) digits is 225000, while the sum is 42.

The spelling of 3551561515401 in words is "three trillion, five hundred fifty-one billion, five hundred sixty-one million, five hundred fifteen thousand, four hundred one".