3778560561 has 8 divisors (see below), whose sum is σ = 5041109664. Its totient is φ = 2517525920.

The previous prime is 3778560547. The next prime is 3778560563. The reversal of 3778560561 is 1650658773.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3778560561 - 2¹¹ = 3778558513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3778560561.

It is not an unprimeable number, because it can be changed into a prime (3778560563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 372780 + ... + 382781.

It is an arithmetic number, because the mean of its divisors is an integer number (630138708).

Almost surely, 2^3778560561 is an apocalyptic number.

It is an amenable number.

3778560561 is a deficient number, since it is larger than the sum of its proper divisors (1262549103).

3778560561 is a wasteful number, since it uses less digits than its factorization.

3778560561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757231.

The product of its (nonzero) digits is 1058400, while the sum is 48.

The square root of 3778560561 is about 61469.9972425573. The cubic root of 3778560561 is about 1557.5504732150.

It can be divided in two parts, 37785 and 60561, that added together give a triangular number (98346 = T₄₄₃).

The spelling of 3778560561 in words is "three billion, seven hundred seventy-eight million, five hundred sixty thousand, five hundred sixty-one".