2111603332461 has 64 divisors (see below), whose sum is σ = 3522964193280. Its totient is φ = 1097110241280.

The previous prime is 2111603332457. The next prime is 2111603332471. The reversal of 2111603332461 is 1642333061112.

It is not a de Polignac number, because 2111603332461 - 2² = 2111603332457 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111603332471) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6220320 + ... + 6550998.

It is an arithmetic number, because the mean of its divisors is an integer number (55046315520).

Almost surely, 2^{2111603332461} is an apocalyptic number.

2111603332461 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2111603332461 is a deficient number, since it is larger than the sum of its proper divisors (1411360860819).

2111603332461 is a wasteful number, since it uses less digits than its factorization.

2111603332461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331314.

The product of its (nonzero) digits is 15552, while the sum is 33.

Adding to 2111603332461 its reverse (1642333061112), we get a palindrome (3753936393573).

The spelling of 2111603332461 in words is "two trillion, one hundred eleven billion, six hundred three million, three hundred thirty-two thousand, four hundred sixty-one".