61667283818 has 16 divisors (see below), whose sum is σ = 106805194944. Its totient is φ = 26156373120.

The previous prime is 61667283817. The next prime is 61667283829. The reversal of 61667283818 is 81838276616.

61667283818 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (61667283817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22703828 + ... + 22706543.

It is an arithmetic number, because the mean of its divisors is an integer number (6675324684).

Almost surely, 2^61667283818 is an apocalyptic number.

61667283818 is a deficient number, since it is larger than the sum of its proper divisors (45137911126).

61667283818 is a wasteful number, since it uses less digits than its factorization.

61667283818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45410477.

The product of its digits is 4644864, while the sum is 56.

The spelling of 61667283818 in words is "sixty-one billion, six hundred sixty-seven million, two hundred eighty-three thousand, eight hundred eighteen".