5661513650 has 24 divisors (see below), whose sum is σ = 11340448644. Its totient is φ = 2090404800.

The previous prime is 5661513631. The next prime is 5661513653. The reversal of 5661513650 is 563151665.

It can be written as a sum of positive squares in 6 ways, for example, as 47458321 + 5614055329 = 6889^2 + 74927^2 .

It is not an unprimeable number, because it can be changed into a prime (5661513653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4354361 + ... + 4355660.

Almost surely, 2^5661513650 is an apocalyptic number.

5661513650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

5661513650 is an abundant number, since it is smaller than the sum of its proper divisors (5678934994).

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

5661513650 is a wasteful number, since it uses less digits than its factorization.

5661513650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8710046 (or 8710041 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 38.

The square root of 5661513650 is about 75243.0305742665. The cubic root of 5661513650 is about 1782.2865084250.

The spelling of 5661513650 in words is "five billion, six hundred sixty-one million, five hundred thirteen thousand, six hundred fifty".