61404105113 has 16 divisors (see below), whose sum is σ = 67669575120. Its totient is φ = 55368278784.

The previous prime is 61404105109. The next prime is 61404105167. The reversal of 61404105113 is 31150140416.

It can be written as a sum of positive squares in 8 ways, for example, as 2621132809 + 58782972304 = 51197^2 + 242452^2 .

It is not a de Polignac number, because 61404105113 - 2² = 61404105109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61404195113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36806 + ... + 352367.

It is an arithmetic number, because the mean of its divisors is an integer number (4229348445).

Almost surely, 2^61404105113 is an apocalyptic number.

It is an amenable number.

61404105113 is a deficient number, since it is larger than the sum of its proper divisors (6265470007).

61404105113 is a wasteful number, since it uses less digits than its factorization.

61404105113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389468.

The product of its (nonzero) digits is 1440, while the sum is 26.

Adding to 61404105113 its reverse (31150140416), we get a palindrome (92554245529).

The spelling of 61404105113 in words is "sixty-one billion, four hundred four million, one hundred five thousand, one hundred thirteen".