8421727617662 has 4 divisors (see below), whose sum is σ = 12632591426496. Its totient is φ = 4210863808830.

The previous prime is 8421727617581. The next prime is 8421727617673. The reversal of 8421727617662 is 2667167271248.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2105431904414 + ... + 2105431904417.

It is an arithmetic number, because the mean of its divisors is an integer number (3158147856624).

Almost surely, 2^{8421727617662} is an apocalyptic number.

8421727617662 is a deficient number, since it is larger than the sum of its proper divisors (4210863808834).

8421727617662 is a wasteful number, since it uses less digits than its factorization.

8421727617662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4210863808833.

The product of its digits is 18966528, while the sum is 59.

The spelling of 8421727617662 in words is "eight trillion, four hundred twenty-one billion, seven hundred twenty-seven million, six hundred seventeen thousand, six hundred sixty-two".