3551311845 has 24 divisors (see below), whose sum is σ = 6166139616. Its totient is φ = 1890792288.

The previous prime is 3551311823. The next prime is 3551311859. The reversal of 3551311845 is 5481131553.

It is a happy number.

It is not a de Polignac number, because 3551311845 - 2⁹ = 3551311333 is a prime.

It is a super-2 number, since 2×3551311845² = 25223631640874608050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40807 + ... + 93636.

It is an arithmetic number, because the mean of its divisors is an integer number (256922484).

Almost surely, 2^3551311845 is an apocalyptic number.

It is an amenable number.

3551311845 is a deficient number, since it is larger than the sum of its proper divisors (2614827771).

3551311845 is a wasteful number, since it uses less digits than its factorization.

3551311845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135041 (or 135038 counting only the distinct ones).

The product of its digits is 36000, while the sum is 36.

The square root of 3551311845 is about 59592.8841809154. The cubic root of 3551311845 is about 1525.6781855032.

The spelling of 3551311845 in words is "three billion, five hundred fifty-one million, three hundred eleven thousand, eight hundred forty-five".