55635599520000 has 1440 divisors, whose sum is σ = 212120761628160. Its totient is φ = 14371430400000.

The previous prime is 55635599519993. The next prime is 55635599520001. The reversal of 55635599520000 is 2599553655.

55635599520000 is a `hidden beast` number, since 5 + 5 + 63 + 5 + 59 + 9 + 520 + 0 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1440).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (55635599520001) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 20507038644 + ... + 20507041356.

It is an arithmetic number, because the mean of its divisors is an integer number (147306084464).

Almost surely, 2^{55635599520000} is an apocalyptic number.

55635599520000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55635599520000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106060380814080).

55635599520000 is an abundant number, since it is smaller than the sum of its proper divisors (156485162108160).

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

55635599520000 is a wasteful number, since it uses less digits than its factorization.

55635599520000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2906 (or 2871 counting only the distinct ones).

The product of its (nonzero) digits is 9112500, while the sum is 54.

The spelling of 55635599520000 in words is "fifty-five trillion, six hundred thirty-five billion, five hundred ninety-nine million, five hundred twenty thousand".