3661039776 has 48 divisors (see below), whose sum is σ = 10116036000. Its totient is φ = 1156117248.

The previous prime is 3661039771. The next prime is 3661039801. The reversal of 3661039776 is 6779301663.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (3661039771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1001751 + ... + 1005398.

It is an arithmetic number, because the mean of its divisors is an integer number (210750750).

Almost surely, 2^3661039776 is an apocalyptic number.

It is an amenable number.

3661039776 is an abundant number, since it is smaller than the sum of its proper divisors (6454996224).

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

3661039776 is a wasteful number, since it uses less digits than its factorization.

3661039776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2007181 (or 2007173 counting only the distinct ones).

The product of its (nonzero) digits is 857304, while the sum is 48.

The square root of 3661039776 is about 60506.5267223297. The cubic root of 3661039776 is about 1541.2324670354.

The spelling of 3661039776 in words is "three billion, six hundred sixty-one million, thirty-nine thousand, seven hundred seventy-six".