8451699136321 has 8 divisors (see below), whose sum is σ = 9702399010304. Its totient is φ = 7211827833120.

The previous prime is 8451699136253. The next prime is 8451699136357. The reversal of 8451699136321 is 1236319961548.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8451699136321 - 2⁷ = 8451699136193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8451699136421) 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, 2707141020 + ... + 2707144141.

It is an arithmetic number, because the mean of its divisors is an integer number (1212799876288).

Almost surely, 2^{8451699136321} is an apocalyptic number.

It is an amenable number.

8451699136321 is a deficient number, since it is larger than the sum of its proper divisors (1250699873983).

8451699136321 is a wasteful number, since it uses less digits than its factorization.

8451699136321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5414285391.

The product of its digits is 8398080, while the sum is 58.

The spelling of 8451699136321 in words is "eight trillion, four hundred fifty-one billion, six hundred ninety-nine million, one hundred thirty-six thousand, three hundred twenty-one".