61683543418166 has 16 divisors (see below), whose sum is σ = 94209161196528. Its totient is φ = 30282285789600.

The previous prime is 61683543418151. The next prime is 61683543418181. The reversal of 61683543418166 is 66181434538616.

It is an interprime number because it is at equal distance from previous prime (61683543418151) and next prime (61683543418181).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 61683543418099 and 61683543418108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 448956905 + ... + 449094276.

It is an arithmetic number, because the mean of its divisors is an integer number (5888072574783).

Almost surely, 2^{61683543418166} is an apocalyptic number.

61683543418166 is a deficient number, since it is larger than the sum of its proper divisors (32525617778362).

61683543418166 is a wasteful number, since it uses less digits than its factorization.

61683543418166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898051807.

The product of its digits is 59719680, while the sum is 62.

The spelling of 61683543418166 in words is "sixty-one trillion, six hundred eighty-three billion, five hundred forty-three million, four hundred eighteen thousand, one hundred sixty-six".