5326661640 has 32 divisors (see below), whose sum is σ = 15979985280. Its totient is φ = 1420443072.

The previous prime is 5326661621. The next prime is 5326661651. The reversal of 5326661640 is 461666235.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22194304 + ... + 22194543.

It is an arithmetic number, because the mean of its divisors is an integer number (499374540).

Almost surely, 2^5326661640 is an apocalyptic number.

It is an amenable number.

5326661640 is an abundant number, since it is smaller than the sum of its proper divisors (10653323640).

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

5326661640 is a wasteful number, since it uses less digits than its factorization.

5326661640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44388861 (or 44388857 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 39.

The square root of 5326661640 is about 72983.9820782615. The cubic root of 5326661640 is about 1746.4320928568.

The spelling of 5326661640 in words is "five billion, three hundred twenty-six million, six hundred sixty-one thousand, six hundred forty".