2001856904070 has 32 divisors (see below), whose sum is σ = 4817337177312. Its totient is φ = 532397329152.

The previous prime is 2001856904057. The next prime is 2001856904071. The reversal of 2001856904070 is 704096581002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001856904071) 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, 89437287 + ... + 89459666.

It is an arithmetic number, because the mean of its divisors is an integer number (150541786791).

Almost surely, 2^{2001856904070} is an apocalyptic number.

2001856904070 is an abundant number, since it is smaller than the sum of its proper divisors (2815480273242).

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

2001856904070 is a wasteful number, since it uses less digits than its factorization.

2001856904070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178897336.

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 2001856904070 in words is "two trillion, one billion, eight hundred fifty-six million, nine hundred four thousand, seventy".