2001473561777 has 8 divisors (see below), whose sum is σ = 2039279279400. Its totient is φ = 1963669402240.

The previous prime is 2001473561771. The next prime is 2001473561809. The reversal of 2001473561777 is 7771653741002.

It can be written as a sum of positive squares in 4 ways, for example, as 28358896801 + 1973114664976 = 168401^2 + 1404676^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2001473561777 - 2³⁴ = 1984293692593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001473561771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2389349 + ... + 3116397.

It is an arithmetic number, because the mean of its divisors is an integer number (254909909925).

Almost surely, 2^{2001473561777} is an apocalyptic number.

It is an amenable number.

2001473561777 is a deficient number, since it is larger than the sum of its proper divisors (37805717623).

2001473561777 is an equidigital number, since it uses as much as digits as its factorization.

2001473561777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779043.

The product of its (nonzero) digits is 1728720, while the sum is 50.

The spelling of 2001473561777 in words is "two trillion, one billion, four hundred seventy-three million, five hundred sixty-one thousand, seven hundred seventy-seven".