26221766652207 has 36 divisors (see below), whose sum is σ = 44060754902736. Its totient is φ = 14983508977920.

The previous prime is 26221766652199. The next prime is 26221766652239. The reversal of 26221766652207 is 70225666712262.

It is not a de Polignac number, because 26221766652207 - 2³ = 26221766652199 is a prime.

It is a super-3 number, since 3×26221766652207³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26221766656207) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 18366207 + ... + 19742367.

Almost surely, 2^{26221766652207} is an apocalyptic number.

26221766652207 is a deficient number, since it is larger than the sum of its proper divisors (17838988250529).

26221766652207 is a wasteful number, since it uses less digits than its factorization.

26221766652207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1419388 (or 1419378 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 54.

The spelling of 26221766652207 in words is "twenty-six trillion, two hundred twenty-one billion, seven hundred sixty-six million, six hundred fifty-two thousand, two hundred seven".