22151823634 has 4 divisors (see below), whose sum is σ = 33227735454. Its totient is φ = 11075911816.

The previous prime is 22151823559. The next prime is 22151823671. The reversal of 22151823634 is 43632815122.

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., 19514693025 + 2637130609 = 139695^2 + 51353^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22151823593 and 22151823602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5537955907 + ... + 5537955910.

Almost surely, 2^22151823634 is an apocalyptic number.

22151823634 is a deficient number, since it is larger than the sum of its proper divisors (11075911820).

22151823634 is a wasteful number, since it uses less digits than its factorization.

22151823634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11075911819.

The product of its digits is 69120, while the sum is 37.

The spelling of 22151823634 in words is "twenty-two billion, one hundred fifty-one million, eight hundred twenty-three thousand, six hundred thirty-four".