3551578648 has 48 divisors (see below), whose sum is σ = 7041520080. Its totient is φ = 1679126976.

The previous prime is 3551578631. The next prime is 3551578663. The reversal of 3551578648 is 8468751553.

It is a super-2 number, since 2×3551578648² = 25227421785859015808, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3551578595 and 3551578604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2300965 + ... + 2302507.

It is an arithmetic number, because the mean of its divisors is an integer number (146698335).

Almost surely, 2^3551578648 is an apocalyptic number.

3551578648 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

3551578648 is a deficient number, since it is larger than the sum of its proper divisors (3489941432).

3551578648 is a wasteful number, since it uses less digits than its factorization.

3551578648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2384 (or 2361 counting only the distinct ones).

The product of its digits is 4032000, while the sum is 52.

The square root of 3551578648 is about 59595.1226863407. The cubic root of 3551578648 is about 1525.7163916030.

The spelling of 3551578648 in words is "three billion, five hundred fifty-one million, five hundred seventy-eight thousand, six hundred forty-eight".