55197799536000 has 1024 divisors, whose sum is σ = 210307249152000. Its totient is φ = 12665797632000.

The previous prime is 55197799535971. The next prime is 55197799536017. The reversal of 55197799536000 is 63599779155.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 17927182461 + ... + 17927185539.

It is an arithmetic number, because the mean of its divisors is an integer number (205378173000).

Almost surely, 2^{55197799536000} is an apocalyptic number.

55197799536000 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 55197799536000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105153624576000).

55197799536000 is an abundant number, since it is smaller than the sum of its proper divisors (155109449616000).

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

55197799536000 is a wasteful number, since it uses less digits than its factorization.

55197799536000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4928 (or 4906 counting only the distinct ones).

The product of its (nonzero) digits is 80372250, while the sum is 66.

The spelling of 55197799536000 in words is "fifty-five trillion, one hundred ninety-seven billion, seven hundred ninety-nine million, five hundred thirty-six thousand".