1679221667862 has 28 divisors (see below), whose sum is σ = 3776521161660. Its totient is φ = 559740555468.

The previous prime is 1679221667833. The next prime is 1679221667863. The reversal of 1679221667862 is 2687661229761.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1679221667862.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1679221667863) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 575863312 + ... + 575866227.

Almost surely, 2^{1679221667862} is an apocalyptic number.

1679221667862 is an abundant number, since it is smaller than the sum of its proper divisors (2097299493798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1679221667862 is an equidigital number, since it uses as much as digits as its factorization.

1679221667862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151729559 (or 1151729544 counting only the distinct ones).

The product of its digits is 36578304, while the sum is 63.

The spelling of 1679221667862 in words is "one trillion, six hundred seventy-nine billion, two hundred twenty-one million, six hundred sixty-seven thousand, eight hundred sixty-two".