61868448166 has 32 divisors (see below), whose sum is σ = 111714946560. Its totient is φ = 25103177856.

The previous prime is 61868448163. The next prime is 61868448179. The reversal of 61868448166 is 66184486816.

It is a self number, because there is not a number n which added to its sum of digits gives 61868448166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61868448163) 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, 338215 + ... + 487981.

It is an arithmetic number, because the mean of its divisors is an integer number (3491092080).

Almost surely, 2^61868448166 is an apocalyptic number.

61868448166 is a deficient number, since it is larger than the sum of its proper divisors (49846498394).

61868448166 is a wasteful number, since it uses less digits than its factorization.

61868448166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151348.

The product of its digits is 10616832, while the sum is 58.

The spelling of 61868448166 in words is "sixty-one billion, eight hundred sixty-eight million, four hundred forty-eight thousand, one hundred sixty-six".