21182270958 has 40 divisors (see below), whose sum is σ = 47479389408. Its totient is φ = 7058464416.

The previous prime is 21182270957. The next prime is 21182270987. The reversal of 21182270958 is 85907228112.

21182270958 is a `hidden beast` number, since 211 + 82 + 270 + 95 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21182270951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 522010 + ... + 561122.

Almost surely, 2^21182270958 is an apocalyptic number.

21182270958 is an abundant number, since it is smaller than the sum of its proper divisors (26297118450).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21182270958 is a wasteful number, since it uses less digits than its factorization.

21182270958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42470 (or 42461 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The spelling of 21182270958 in words is "twenty-one billion, one hundred eighty-two million, two hundred seventy thousand, nine hundred fifty-eight".