61103530641 has 4 divisors (see below), whose sum is σ = 81471374192. Its totient is φ = 40735687092.

The previous prime is 61103530637. The next prime is 61103530673. The reversal of 61103530641 is 14603530116.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 61103530641 - 2² = 61103530637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61103530599 and 61103530608.

It is not an unprimeable number, because it can be changed into a prime (61103530841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10183921771 + ... + 10183921776.

It is an arithmetic number, because the mean of its divisors is an integer number (20367843548).

Almost surely, 2^61103530641 is an apocalyptic number.

It is an amenable number.

61103530641 is a deficient number, since it is larger than the sum of its proper divisors (20367843551).

61103530641 is a wasteful number, since it uses less digits than its factorization.

61103530641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20367843550.

The product of its (nonzero) digits is 6480, while the sum is 30.

The spelling of 61103530641 in words is "sixty-one billion, one hundred three million, five hundred thirty thousand, six hundred forty-one".