21550359676 has 12 divisors (see below), whose sum is σ = 37717259608. Its totient is φ = 10773999792.

The previous prime is 21550359673. The next prime is 21550359707. The reversal of 21550359676 is 67695305512.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21550359673) 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, 253266 + ... + 327481.

Almost surely, 2^21550359676 is an apocalyptic number.

It is an amenable number.

21550359676 is a deficient number, since it is larger than the sum of its proper divisors (16166899932).

21550359676 is a wasteful number, since it uses less digits than its factorization.

21550359676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590028 (or 590026 counting only the distinct ones).

The product of its (nonzero) digits is 1701000, while the sum is 49.

The spelling of 21550359676 in words is "twenty-one billion, five hundred fifty million, three hundred fifty-nine thousand, six hundred seventy-six".