215055354500000 has 336 divisors, whose sum is σ = 624346578261504. Its totient is φ = 71354736000000.

The previous prime is 215055354499991. The next prime is 215055354500009. The reversal of 215055354500000 is 5453550512.

It is an interprime number because it is at equal distance from previous prime (215055354499991) and next prime (215055354500009).

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (215055354500009) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 107508962 + ... + 109491038.

It is an arithmetic number, because the mean of its divisors is an integer number (1858174340064).

Almost surely, 2^{215055354500000} is an apocalyptic number.

215055354500000 is a gapful number since it is divisible by the number (20) 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 215055354500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312173289130752).

215055354500000 is an abundant number, since it is smaller than the sum of its proper divisors (409291223761504).

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

215055354500000 is an frugal number, since it uses more digits than its factorization.

215055354500000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1982155 (or 1982122 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 35.

The spelling of 215055354500000 in words is "two hundred fifteen trillion, fifty-five billion, three hundred fifty-four million, five hundred thousand".