2049103543601 has 4 divisors (see below), whose sum is σ = 2049106545252. Its totient is φ = 2049100541952.

The previous prime is 2049103543577. The next prime is 2049103543649. The reversal of 2049103543601 is 1063453019402.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 787210788001 + 1261892755600 = 887249^2 + 1123340^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2049103543601 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2049103543001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73961 + ... + 2025753.

It is an arithmetic number, because the mean of its divisors is an integer number (512276636313).

Almost surely, 2^{2049103543601} is an apocalyptic number.

It is an amenable number.

2049103543601 is a deficient number, since it is larger than the sum of its proper divisors (3001651).

2049103543601 is a wasteful number, since it uses less digits than its factorization.

2049103543601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3001650.

The product of its (nonzero) digits is 77760, while the sum is 38.

The spelling of 2049103543601 in words is "two trillion, forty-nine billion, one hundred three million, five hundred forty-three thousand, six hundred one".