55555416663040 has 352 divisors, whose sum is σ = 152873287603200. Its totient is φ = 18976759087104.

The previous prime is 55555416662959. The next prime is 55555416663041. The reversal of 55555416663040 is 4036661455555.

It is not an unprimeable number, because it can be changed into a prime (55555416663041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21794983686 + ... + 21794986234.

Almost surely, 2^{55555416663040} 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 55555416663040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76436643801600).

55555416663040 is an abundant number, since it is smaller than the sum of its proper divisors (97317870940160).

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

55555416663040 is a wasteful number, since it uses less digits than its factorization.

55555416663040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4605 (or 4587 counting only the distinct ones).

The product of its (nonzero) digits is 32400000, while the sum is 55.

The spelling of 55555416663040 in words is "fifty-five trillion, five hundred fifty-five billion, four hundred sixteen million, six hundred sixty-three thousand, forty".