2005445051220 has 96 divisors (see below), whose sum is σ = 6055136317440. Its totient is φ = 492999183360.

The previous prime is 2005445051189. The next prime is 2005445051261. The reversal of 2005445051220 is 221505445002.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1095700 + ... + 2282859.

It is an arithmetic number, because the mean of its divisors is an integer number (63074336640).

Almost surely, 2^{2005445051220} is an apocalyptic number.

2005445051220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2005445051220 is an abundant number, since it is smaller than the sum of its proper divisors (4049691266220).

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

2005445051220 is a wasteful number, since it uses less digits than its factorization.

2005445051220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3379345 (or 3379343 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 30.

The spelling of 2005445051220 in words is "two trillion, five billion, four hundred forty-five million, fifty-one thousand, two hundred twenty".