2001403574261 has 64 divisors (see below), whose sum is σ = 2647030579200. Its totient is φ = 1470151178496.

The previous prime is 2001403574257. The next prime is 2001403574279. The reversal of 2001403574261 is 1624753041002.

It is not a de Polignac number, because 2001403574261 - 2² = 2001403574257 is a prime.

It is a super-2 number, since 2×2001403574261² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001403574861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9652895 + ... + 9858051.

It is an arithmetic number, because the mean of its divisors is an integer number (41359852800).

Almost surely, 2^{2001403574261} is an apocalyptic number.

It is an amenable number.

2001403574261 is a deficient number, since it is larger than the sum of its proper divisors (645627004939).

2001403574261 is a wasteful number, since it uses less digits than its factorization.

2001403574261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205338.

The product of its (nonzero) digits is 40320, while the sum is 35.

The spelling of 2001403574261 in words is "two trillion, one billion, four hundred three million, five hundred seventy-four thousand, two hundred sixty-one".