5661312048 has 160 divisors (see below), whose sum is σ = 19549145600. Its totient is φ = 1532369664.

The previous prime is 5661312047. The next prime is 5661312061. The reversal of 5661312048 is 8402131665.

It is a happy number.

5661312048 is a `hidden beast` number, since 566 + 1 + 31 + 20 + 48 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (5661312047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8190 + ... + 106722.

It is an arithmetic number, because the mean of its divisors is an integer number (122182160).

Almost surely, 2^5661312048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5661312048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9774572800).

5661312048 is an abundant number, since it is smaller than the sum of its proper divisors (13887833552).

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

5661312048 is a wasteful number, since it uses less digits than its factorization.

5661312048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98576 (or 98564 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 5661312048 is about 75241.6908900910. The cubic root of 5661312048 is about 1782.2653529053.

The spelling of 5661312048 in words is "five billion, six hundred sixty-one million, three hundred twelve thousand, forty-eight".