5501139840 has 768 divisors, whose sum is σ = 23232744000. Its totient is φ = 1226244096.

The previous prime is 5501139829. The next prime is 5501139859. The reversal of 5501139840 is 489311055.

5501139840 is a `hidden beast` number, since 550 + 1 + 13 + 98 + 4 + 0 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 5501139795 and 5501139804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 61810516 + ... + 61810604.

Almost surely, 2^5501139840 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 5501139840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11616372000).

5501139840 is an abundant number, since it is smaller than the sum of its proper divisors (17731604160).

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

5501139840 is a wasteful number, since it uses less digits than its factorization.

5501139840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204 (or 179 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 5501139840 is about 74169.6692725537. The cubic root of 5501139840 is about 1765.2960996113.

The spelling of 5501139840 in words is "five billion, five hundred one million, one hundred thirty-nine thousand, eight hundred forty".