3561668801 has 4 divisors (see below), whose sum is σ = 3644498352. Its totient is φ = 3478839252.

The previous prime is 3561668783. The next prime is 3561668867. The reversal of 3561668801 is 1088661653.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3561668801 - 2³⁰ = 2487926977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3561668101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41414711 + ... + 41414796.

It is an arithmetic number, because the mean of its divisors is an integer number (911124588).

Almost surely, 2^3561668801 is an apocalyptic number.

It is an amenable number.

3561668801 is a deficient number, since it is larger than the sum of its proper divisors (82829551).

3561668801 is an equidigital number, since it uses as much as digits as its factorization.

3561668801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82829550.

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 3561668801 is about 59679.7185063737. The cubic root of 3561668801 is about 1527.1598957791.

The spelling of 3561668801 in words is "three billion, five hundred sixty-one million, six hundred sixty-eight thousand, eight hundred one".