22781628433274 has 4 divisors (see below), whose sum is σ = 34172442649914. Its totient is φ = 11390814216636.

The previous prime is 22781628433253. The next prime is 22781628433301. The reversal of 22781628433274 is 47233482618722.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20868405558025 + 1913222875249 = 4568195^2 + 1383193^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5695407108317 + ... + 5695407108320.

Almost surely, 2^{22781628433274} is an apocalyptic number.

22781628433274 is a deficient number, since it is larger than the sum of its proper divisors (11390814216640).

22781628433274 is a wasteful number, since it uses less digits than its factorization.

22781628433274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11390814216639.

The product of its digits is 43352064, while the sum is 59.

The spelling of 22781628433274 in words is "twenty-two trillion, seven hundred eighty-one billion, six hundred twenty-eight million, four hundred thirty-three thousand, two hundred seventy-four".