191122242656 has 24 divisors (see below), whose sum is σ = 376563454344. Its totient is φ = 95487079680.

The previous prime is 191122242653. The next prime is 191122242679. The reversal of 191122242656 is 656242221191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191122242653) 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, 2271845 + ... + 2354468.

It is an arithmetic number, because the mean of its divisors is an integer number (15690143931).

Almost surely, 2^191122242656 is an apocalyptic number.

191122242656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

191122242656 is a deficient number, since it is larger than the sum of its proper divisors (185441211688).

191122242656 is a wasteful number, since it uses less digits than its factorization.

191122242656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4627614 (or 4627606 counting only the distinct ones).

The product of its digits is 103680, while the sum is 41.

The spelling of 191122242656 in words is "one hundred ninety-one billion, one hundred twenty-two million, two hundred forty-two thousand, six hundred fifty-six".