79221811347040 has 24 divisors (see below), whose sum is σ = 187161529307760. Its totient is φ = 31688724538752.

The previous prime is 79221811347031. The next prime is 79221811347047. The reversal of 79221811347040 is 4074311812297.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79221811347047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247568160300 + ... + 247568160619.

It is an arithmetic number, because the mean of its divisors is an integer number (7798397054490).

Almost surely, 2^{79221811347040} is an apocalyptic number.

It is an amenable number.

79221811347040 is an abundant number, since it is smaller than the sum of its proper divisors (107939717960720).

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

79221811347040 is a wasteful number, since it uses less digits than its factorization.

79221811347040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495136320934 (or 495136320926 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 49.

The spelling of 79221811347040 in words is "seventy-nine trillion, two hundred twenty-one billion, eight hundred eleven million, three hundred forty-seven thousand, forty".