61001105043 has 4 divisors (see below), whose sum is σ = 81334806728. Its totient is φ = 40667403360.

The previous prime is 61001105029. The next prime is 61001105047. The reversal of 61001105043 is 34050110016.

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

It is not a de Polignac number, because 61001105043 - 2⁴ = 61001105027 is a prime.

It is a super-2 number, since 2×61001105043² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61001105047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10166850838 + ... + 10166850843.

It is an arithmetic number, because the mean of its divisors is an integer number (20333701682).

Almost surely, 2^61001105043 is an apocalyptic number.

61001105043 is a deficient number, since it is larger than the sum of its proper divisors (20333701685).

61001105043 is a wasteful number, since it uses less digits than its factorization.

61001105043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20333701684.

The product of its (nonzero) digits is 360, while the sum is 21.

Adding to 61001105043 its reverse (34050110016), we get a palindrome (95051215059).

The spelling of 61001105043 in words is "sixty-one billion, one million, one hundred five thousand, forty-three".