5555009640 has 128 divisors (see below), whose sum is σ = 17111243520. Its totient is φ = 1441843200.

The previous prime is 5555009633. The next prime is 5555009717. The reversal of 5555009640 is 469005555.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2660677 + ... + 2662763.

It is an arithmetic number, because the mean of its divisors is an integer number (133681590).

Almost surely, 2^5555009640 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 5555009640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8555621760).

5555009640 is an abundant number, since it is smaller than the sum of its proper divisors (11556233880).

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

5555009640 is a wasteful number, since it uses less digits than its factorization.

5555009640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2683 (or 2679 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 39.

The square root of 5555009640 is about 74531.9370471478. The cubic root of 5555009640 is about 1771.0396012197.

It can be divided in two parts, 555 and 5009640, that added together give a triangular number (5010195 = T₃₁₆₅).

The spelling of 5555009640 in words is "five billion, five hundred fifty-five million, nine thousand, six hundred forty".