1641611436103 has 4 divisors (see below), whose sum is σ = 1641614182560. Its totient is φ = 1641608689648.

The previous prime is 1641611436067. The next prime is 1641611436131. The reversal of 1641611436103 is 3016341161461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1641611436103 - 2⁹ = 1641611435591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641611416103) 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, 54550 + ... + 1812787.

It is an arithmetic number, because the mean of its divisors is an integer number (410403545640).

Almost surely, 2^{1641611436103} is an apocalyptic number.

1641611436103 is a deficient number, since it is larger than the sum of its proper divisors (2746457).

1641611436103 is an equidigital number, since it uses as much as digits as its factorization.

1641611436103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2746456.

The product of its (nonzero) digits is 31104, while the sum is 37.

Adding to 1641611436103 its reverse (3016341161461), we get a palindrome (4657952597564).

The spelling of 1641611436103 in words is "one trillion, six hundred forty-one billion, six hundred eleven million, four hundred thirty-six thousand, one hundred three".