22263072878 has 4 divisors (see below), whose sum is σ = 33394609320. Its totient is φ = 11131536438.

The previous prime is 22263072859. The next prime is 22263072889. The reversal of 22263072878 is 87827036222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87827036222 = 2 ⋅43913518111.

It is a super-2 number, since 2×22263072878² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5565768218 + ... + 5565768221.

It is an arithmetic number, because the mean of its divisors is an integer number (8348652330).

Almost surely, 2^22263072878 is an apocalyptic number.

22263072878 is a deficient number, since it is larger than the sum of its proper divisors (11131536442).

22263072878 is a wasteful number, since it uses less digits than its factorization.

22263072878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11131536441.

The product of its (nonzero) digits is 903168, while the sum is 47.

The spelling of 22263072878 in words is "twenty-two billion, two hundred sixty-three million, seventy-two thousand, eight hundred seventy-eight".