22155551045567 has 2 divisors, whose sum is σ = 22155551045568. Its totient is φ = 22155551045566.

The previous prime is 22155551045549. The next prime is 22155551045609. The reversal of 22155551045567 is 76554015555122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22155551045567 - 2¹⁸ = 22155550783423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22155551042567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11077775522783 + 11077775522784.

It is an arithmetic number, because the mean of its divisors is an integer number (11077775522784).

Almost surely, 2^{22155551045567} is an apocalyptic number.

22155551045567 is a deficient number, since it is larger than the sum of its proper divisors (1).

22155551045567 is an equidigital number, since it uses as much as digits as its factorization.

22155551045567 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10500000, while the sum is 53.

The spelling of 22155551045567 in words is "twenty-two trillion, one hundred fifty-five billion, five hundred fifty-one million, forty-five thousand, five hundred sixty-seven".