61111667223 has 12 divisors (see below), whose sum is σ = 88282550200. Its totient is φ = 40736430576.

The previous prime is 61111667213. The next prime is 61111667231. The reversal of 61111667223 is 32276611116.

61111667223 is a `hidden beast` number, since 611 + 1 + 16 + 6 + 7 + 2 + 23 = 666.

It is not a de Polignac number, because 61111667223 - 2¹⁴ = 61111650839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61111667213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 306448 + ... + 464901.

Almost surely, 2^61111667223 is an apocalyptic number.

61111667223 is a deficient number, since it is larger than the sum of its proper divisors (27170882977).

61111667223 is a wasteful number, since it uses less digits than its factorization.

61111667223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780158 (or 780155 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The spelling of 61111667223 in words is "sixty-one billion, one hundred eleven million, six hundred sixty-seven thousand, two hundred twenty-three".