22505692136738 has 8 divisors (see below), whose sum is σ = 33758575621788. Its totient is φ = 11252833596144.

The previous prime is 22505692136731. The next prime is 22505692136743. The reversal of 22505692136738 is 83763129650522.

It can be written as a sum of positive squares in 2 ways, for example, as 22395297422689 + 110394714049 = 4732367^2 + 332257^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (22505692136731) 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, 3788381 + ... + 7704752.

Almost surely, 2^{22505692136738} is an apocalyptic number.

22505692136738 is a deficient number, since it is larger than the sum of its proper divisors (11252883485050).

22505692136738 is a wasteful number, since it uses less digits than its factorization.

22505692136738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12472228.

The product of its (nonzero) digits is 32659200, while the sum is 59.

The spelling of 22505692136738 in words is "twenty-two trillion, five hundred five billion, six hundred ninety-two million, one hundred thirty-six thousand, seven hundred thirty-eight".