61613668212226 has 24 divisors (see below), whose sum is σ = 104045300146620. Its totient is φ = 27200682950496.

The previous prime is 61613668212221. The next prime is 61613668212241. The reversal of 61613668212226 is 62221286631616.

It can be written as a sum of positive squares in 2 ways, for example, as 53924422055625 + 7689246156601 = 7343325^2 + 2772949^2 .

It is a super-2 number, since 2×61613668212226² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61613668212221) 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 11 ways as a sum of consecutive naturals, for example, 2239831681 + ... + 2239859188.

Almost surely, 2^{61613668212226} is an apocalyptic number.

61613668212226 is a deficient number, since it is larger than the sum of its proper divisors (42431631934394).

61613668212226 is a wasteful number, since it uses less digits than its factorization.

61613668212226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4479690930 (or 4479690907 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 52.

The spelling of 61613668212226 in words is "sixty-one trillion, six hundred thirteen billion, six hundred sixty-eight million, two hundred twelve thousand, two hundred twenty-six".