22151427438 has 64 divisors (see below), whose sum is σ = 54596666880. Its totient is φ = 5849625600.

The previous prime is 22151427421. The next prime is 22151427439. The reversal of 22151427438 is 83472415122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22151427396 and 22151427405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22151427439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 305803 + ... + 371238.

It is an arithmetic number, because the mean of its divisors is an integer number (853072920).

Almost surely, 2^22151427438 is an apocalyptic number.

22151427438 is an abundant number, since it is smaller than the sum of its proper divisors (32445239442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22151427438 is a wasteful number, since it uses less digits than its factorization.

22151427438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677113.

The product of its digits is 107520, while the sum is 39.

The spelling of 22151427438 in words is "twenty-two billion, one hundred fifty-one million, four hundred twenty-seven thousand, four hundred thirty-eight".