245221455021200 has 60 divisors (see below), whose sum is σ = 673308052223040. Its totient is φ = 84075927434880.

The previous prime is 245221455021167. The next prime is 245221455021209. The reversal of 245221455021200 is 2120554122542.

It is a happy number.

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 (245221455021209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43789542740 + ... + 43789548339.

It is an arithmetic number, because the mean of its divisors is an integer number (11221800870384).

Almost surely, 2^{245221455021200} is an apocalyptic number.

245221455021200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245221455021200 is an abundant number, since it is smaller than the sum of its proper divisors (428086597201840).

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

245221455021200 is a wasteful number, since it uses less digits than its factorization.

245221455021200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87579091104 (or 87579091093 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 35.

The spelling of 245221455021200 in words is "two hundred forty-five trillion, two hundred twenty-one billion, four hundred fifty-five million, twenty-one thousand, two hundred".