61106556411213 has 16 divisors (see below), whose sum is σ = 81524403032640. Its totient is φ = 40713214381056.

The previous prime is 61106556411209. The next prime is 61106556411233. The reversal of 61106556411213 is 31211465560116.

It is a happy number.

It is not a de Polignac number, because 61106556411213 - 2² = 61106556411209 is a prime.

It is a super-2 number, since 2×61106556411213² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61106556411233) 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, 32465523 + ... + 34296111.

It is an arithmetic number, because the mean of its divisors is an integer number (5095275189540).

Almost surely, 2^{61106556411213} is an apocalyptic number.

It is an amenable number.

61106556411213 is a deficient number, since it is larger than the sum of its proper divisors (20417846621427).

61106556411213 is a wasteful number, since it uses less digits than its factorization.

61106556411213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1837276.

The product of its (nonzero) digits is 129600, while the sum is 42.

The spelling of 61106556411213 in words is "sixty-one trillion, one hundred six billion, five hundred fifty-six million, four hundred eleven thousand, two hundred thirteen".