22117779604 has 6 divisors (see below), whose sum is σ = 38706114314. Its totient is φ = 11058889800.

The previous prime is 22117779503. The next prime is 22117779631. The reversal of 22117779604 is 40697771122.

It can be written as a sum of positive squares in only one way, i.e., 18028432900 + 4089346704 = 134270^2 + 63948^2 .

It is a super-2 number, since 2×22117779604² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2764722447 + ... + 2764722454.

Almost surely, 2^22117779604 is an apocalyptic number.

It is an amenable number.

22117779604 is a deficient number, since it is larger than the sum of its proper divisors (16588334710).

22117779604 is a wasteful number, since it uses less digits than its factorization.

22117779604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5529444905 (or 5529444903 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 46.

The spelling of 22117779604 in words is "twenty-two billion, one hundred seventeen million, seven hundred seventy-nine thousand, six hundred four".