22164626251 has 4 divisors (see below), whose sum is σ = 22166378352. Its totient is φ = 22162874152.

The previous prime is 22164626249. The next prime is 22164626279. The reversal of 22164626251 is 15262646122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22164626251 - 2¹ = 22164626249 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22164626251.

It is not an unprimeable number, because it can be changed into a prime (22164626201) 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, 856936 + ... + 882421.

It is an arithmetic number, because the mean of its divisors is an integer number (5541594588).

Almost surely, 2^22164626251 is an apocalyptic number.

22164626251 is a deficient number, since it is larger than the sum of its proper divisors (1752101).

22164626251 is a wasteful number, since it uses less digits than its factorization.

22164626251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1752100.

The product of its digits is 69120, while the sum is 37.

The spelling of 22164626251 in words is "twenty-two billion, one hundred sixty-four million, six hundred twenty-six thousand, two hundred fifty-one".