2001555300006 has 32 divisors (see below), whose sum is σ = 4447998000000. Its totient is φ = 667170500040.

The previous prime is 2001555300001. The next prime is 2001555300047. The reversal of 2001555300006 is 6000035551002.

2001555300006 is a `hidden beast` number, since 200 + 155 + 5 + 300 + 0 + 0 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001555300001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2243745 + ... + 3006243.

It is an arithmetic number, because the mean of its divisors is an integer number (138999937500).

Almost surely, 2^{2001555300006} is an apocalyptic number.

2001555300006 is an abundant number, since it is smaller than the sum of its proper divisors (2446442699994).

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

2001555300006 is a wasteful number, since it uses less digits than its factorization.

2001555300006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811121 (or 811115 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The spelling of 2001555300006 in words is "two trillion, one billion, five hundred fifty-five million, three hundred thousand, six".