22347123778 has 16 divisors (see below), whose sum is σ = 38379403584. Its totient is φ = 9559826640.

The previous prime is 22347123769. The next prime is 22347123839. The reversal of 22347123778 is 87732174322.

It is a super-2 number, since 2×22347123778² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1451413 + ... + 1466728.

It is an arithmetic number, because the mean of its divisors is an integer number (2398712724).

Almost surely, 2^22347123778 is an apocalyptic number.

22347123778 is a deficient number, since it is larger than the sum of its proper divisors (16032279806).

22347123778 is a wasteful number, since it uses less digits than its factorization.

22347123778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2918697.

The product of its digits is 790272, while the sum is 46.

The spelling of 22347123778 in words is "twenty-two billion, three hundred forty-seven million, one hundred twenty-three thousand, seven hundred seventy-eight".