555479907840 has 1800 divisors, whose sum is σ = 2386101514104. Its totient is φ = 123354316800.

The previous prime is 555479907833. The next prime is 555479907847. The reversal of 555479907840 is 48709974555.

555479907840 is a `hidden beast` number, since 5 + 5 + 5 + 479 + 90 + 78 + 4 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (555479907833) and next prime (555479907847).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555479907847) by changing a digit.

It is a polite number, since it can be written in 179 ways as a sum of consecutive naturals, for example, 4240304575 + ... + 4240304705.

Almost surely, 2^555479907840 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 555479907840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1193050757052).

555479907840 is an abundant number, since it is smaller than the sum of its proper divisors (1830621606264).

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

555479907840 is a wasteful number, since it uses less digits than its factorization.

555479907840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 165 counting only the distinct ones).

The product of its (nonzero) digits is 63504000, while the sum is 63.

The spelling of 555479907840 in words is "five hundred fifty-five billion, four hundred seventy-nine million, nine hundred seven thousand, eight hundred forty".