122687270578 has 4 divisors (see below), whose sum is σ = 184030905870. Its totient is φ = 61343635288.

The previous prime is 122687270569. The next prime is 122687270581. The reversal of 122687270578 is 875072786221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 875072786221 = 747401 ⋅1170821.

It can be written as a sum of positive squares in only one way, i.e., 68166421569 + 54520849009 = 261087^2 + 233497^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30671817643 + ... + 30671817646.

Almost surely, 2^122687270578 is an apocalyptic number.

122687270578 is a deficient number, since it is larger than the sum of its proper divisors (61343635292).

122687270578 is an equidigital number, since it uses as much as digits as its factorization.

122687270578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61343635291.

The product of its (nonzero) digits is 5268480, while the sum is 55.

The spelling of 122687270578 in words is "one hundred twenty-two billion, six hundred eighty-seven million, two hundred seventy thousand, five hundred seventy-eight".