61843535349 has 16 divisors (see below), whose sum is σ = 86048929152. Its totient is φ = 39433822208.

The previous prime is 61843535297. The next prime is 61843535381. The reversal of 61843535349 is 94353534816.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61843535349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61843535849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2006197 + ... + 2036789.

It is an arithmetic number, because the mean of its divisors is an integer number (5378058072).

Almost surely, 2^61843535349 is an apocalyptic number.

61843535349 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

It is an amenable number.

61843535349 is a deficient number, since it is larger than the sum of its proper divisors (24205393803).

61843535349 is a wasteful number, since it uses less digits than its factorization.

61843535349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59916.

The product of its digits is 4665600, while the sum is 51.

The spelling of 61843535349 in words is "sixty-one billion, eight hundred forty-three million, five hundred thirty-five thousand, three hundred forty-nine".