22146797087 has 4 divisors (see below), whose sum is σ = 22147244496. Its totient is φ = 22146349680.

The previous prime is 22146797059. The next prime is 22146797089. The reversal of 22146797087 is 78079764122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78079764122 = 2 ⋅39039882061.

It is a cyclic number.

It is not a de Polignac number, because 22146797087 - 2¹² = 22146792991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22146797089) 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, 138683 + ... + 252044.

It is an arithmetic number, because the mean of its divisors is an integer number (5536811124).

Almost surely, 2^22146797087 is an apocalyptic number.

22146797087 is a deficient number, since it is larger than the sum of its proper divisors (447409).

22146797087 is an equidigital number, since it uses as much as digits as its factorization.

22146797087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447408.

The product of its (nonzero) digits is 2370816, while the sum is 53.

The spelling of 22146797087 in words is "twenty-two billion, one hundred forty-six million, seven hundred ninety-seven thousand, eighty-seven".