22104438878 has 4 divisors (see below), whose sum is σ = 33156658320. Its totient is φ = 11052219438.

The previous prime is 22104438877. The next prime is 22104438893. The reversal of 22104438878 is 87883440122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87883440122 = 2 ⋅43941720061.

It is a super-2 number, since 2×22104438878² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22104438877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5526109718 + ... + 5526109721.

It is an arithmetic number, because the mean of its divisors is an integer number (8289164580).

Almost surely, 2^22104438878 is an apocalyptic number.

22104438878 is a deficient number, since it is larger than the sum of its proper divisors (11052219442).

22104438878 is a wasteful number, since it uses less digits than its factorization.

22104438878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11052219441.

The product of its (nonzero) digits is 688128, while the sum is 47.

The spelling of 22104438878 in words is "twenty-two billion, one hundred four million, four hundred thirty-eight thousand, eight hundred seventy-eight".