5661000016 has 40 divisors (see below), whose sum is σ = 12626602560. Its totient is φ = 2408427264.

The previous prime is 5661000001. The next prime is 5661000031. The reversal of 5661000016 is 6100001665.

It is an interprime number because it is at equal distance from previous prime (5661000001) and next prime (5661000031).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169126 + ... + 199813.

It is an arithmetic number, because the mean of its divisors is an integer number (315665064).

Almost surely, 2^5661000016 is an apocalyptic number.

5661000016 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

5661000016 is an abundant number, since it is smaller than the sum of its proper divisors (6965602544).

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

5661000016 is a wasteful number, since it uses less digits than its factorization.

5661000016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369091 (or 369085 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 5661000016 is about 75239.6173302337. The cubic root of 5661000016 is about 1782.2326081967.

The spelling of 5661000016 in words is "five billion, six hundred sixty-one million, sixteen", and thus it is an aban number.