79221409451 has 8 divisors (see below), whose sum is σ = 80356540800. Its totient is φ = 78087627072.

The previous prime is 79221409439. The next prime is 79221409457. The reversal of 79221409451 is 15490412297.

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 79221409451 - 2⁶ = 79221409387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79221409457) 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, 218651 + ... + 454148.

It is an arithmetic number, because the mean of its divisors is an integer number (10044567600).

Almost surely, 2^79221409451 is an apocalyptic number.

79221409451 is a deficient number, since it is larger than the sum of its proper divisors (1135131349).

79221409451 is a wasteful number, since it uses less digits than its factorization.

79221409451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674485.

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 79221409451 in words is "seventy-nine billion, two hundred twenty-one million, four hundred nine thousand, four hundred fifty-one".