3551065650 has 144 divisors (see below), whose sum is σ = 10756082400. Its totient is φ = 860824800.

The previous prime is 3551065633. The next prime is 3551065699. The reversal of 3551065650 is 565601553.

3551065650 is a `hidden beast` number, since 3 + 551 + 0 + 6 + 56 + 50 = 666.

It is a super-2 number, since 2×3551065650² = 25220134501219845000, which contains 22 as substring.

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 152481 + ... + 174219.

Almost surely, 2^3551065650 is an apocalyptic number.

3551065650 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3551065650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5378041200).

3551065650 is an abundant number, since it is smaller than the sum of its proper divisors (7205016750).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3551065650 is a wasteful number, since it uses less digits than its factorization.

3551065650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21782 (or 21760 counting only the distinct ones).

The product of its (nonzero) digits is 67500, while the sum is 36.

The square root of 3551065650 is about 59590.8185041958. The cubic root of 3551065650 is about 1525.6429287645.

The spelling of 3551065650 in words is "three billion, five hundred fifty-one million, sixty-five thousand, six hundred fifty".