79220221347 has 16 divisors (see below), whose sum is σ = 108365672448. Its totient is φ = 51450540960.

The previous prime is 79220221343. The next prime is 79220221393. The reversal of 79220221347 is 74312202297.

It is not a de Polignac number, because 79220221347 - 2² = 79220221343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79220221343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 752304 + ... + 851117.

It is an arithmetic number, because the mean of its divisors is an integer number (6772854528).

Almost surely, 2^79220221347 is an apocalyptic number.

79220221347 is a deficient number, since it is larger than the sum of its proper divisors (29145451101).

79220221347 is a wasteful number, since it uses less digits than its factorization.

79220221347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1603850.

The product of its (nonzero) digits is 84672, while the sum is 39.

The spelling of 79220221347 in words is "seventy-nine billion, two hundred twenty million, two hundred twenty-one thousand, three hundred forty-seven".