55451361020000 has 960 divisors, whose sum is σ = 160321682239488. Its totient is φ = 18670080000000.

The previous prime is 55451361019973. The next prime is 55451361020039. The reversal of 55451361020000 is 2016315455.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 28422019025 + ... + 28422020975.

Almost surely, 2^{55451361020000} is an apocalyptic number.

55451361020000 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 55451361020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80160841119744).

55451361020000 is an abundant number, since it is smaller than the sum of its proper divisors (104870321219488).

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

55451361020000 is a wasteful number, since it uses less digits than its factorization.

55451361020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2193 (or 2170 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

Adding to 55451361020000 its reverse (2016315455), we get a palindrome (55453377335455).

The spelling of 55451361020000 in words is "fifty-five trillion, four hundred fifty-one billion, three hundred sixty-one million, twenty thousand".