122278455679 has 8 divisors (see below), whose sum is σ = 123498307440. Its totient is φ = 121058784000.

The previous prime is 122278455671. The next prime is 122278455707. The reversal of 122278455679 is 976554872221.

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 122278455679 - 2³ = 122278455671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122278455671) 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, 1627852 + ... + 1701310.

It is an arithmetic number, because the mean of its divisors is an integer number (15437288430).

Almost surely, 2^122278455679 is an apocalyptic number.

122278455679 is a deficient number, since it is larger than the sum of its proper divisors (1219851761).

122278455679 is a wasteful number, since it uses less digits than its factorization.

122278455679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90041.

The product of its digits is 16934400, while the sum is 58.

The spelling of 122278455679 in words is "one hundred twenty-two billion, two hundred seventy-eight million, four hundred fifty-five thousand, six hundred seventy-nine".