21769883742607 has 24 divisors (see below), whose sum is σ = 29450929833248. Its totient is φ = 15658657629120.

The previous prime is 21769883742577. The next prime is 21769883742611. The reversal of 21769883742607 is 70624738896712.

It is not a de Polignac number, because 21769883742607 - 2³¹ = 21767736258959 is a prime.

It is a super-2 number, since 2×21769883742607² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21769883742697) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 988540608 + ... + 988562629.

Almost surely, 2^{21769883742607} is an apocalyptic number.

21769883742607 is a deficient number, since it is larger than the sum of its proper divisors (7681046090641).

21769883742607 is a wasteful number, since it uses less digits than its factorization.

21769883742607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1977103279 (or 1977103268 counting only the distinct ones).

The product of its (nonzero) digits is 341397504, while the sum is 70.

The spelling of 21769883742607 in words is "twenty-one trillion, seven hundred sixty-nine billion, eight hundred eighty-three million, seven hundred forty-two thousand, six hundred seven".