3551509645423 has 4 divisors (see below), whose sum is σ = 3627073680480. Its totient is φ = 3475945610368.

The previous prime is 3551509645391. The next prime is 3551509645429. The reversal of 3551509645423 is 3245469051553.

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 3551509645423 - 2⁵ = 3551509645391 is a prime.

It is a super-2 number, since 2×3551509645423² (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 (3551509645429) 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, 37782017458 + ... + 37782017551.

It is an arithmetic number, because the mean of its divisors is an integer number (906768420120).

Almost surely, 2^{3551509645423} is an apocalyptic number.

3551509645423 is a deficient number, since it is larger than the sum of its proper divisors (75564035057).

3551509645423 is an equidigital number, since it uses as much as digits as its factorization.

3551509645423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75564035056.

The product of its (nonzero) digits is 9720000, while the sum is 52.

The spelling of 3551509645423 in words is "three trillion, five hundred fifty-one billion, five hundred nine million, six hundred forty-five thousand, four hundred twenty-three".