21141386582 has 4 divisors (see below), whose sum is σ = 31712079876. Its totient is φ = 10570693290.

The previous prime is 21141386557. The next prime is 21141386593. The reversal of 21141386582 is 28568314112.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5285346644 + ... + 5285346647.

It is an arithmetic number, because the mean of its divisors is an integer number (7928019969).

Almost surely, 2^21141386582 is an apocalyptic number.

21141386582 is a deficient number, since it is larger than the sum of its proper divisors (10570693294).

21141386582 is a wasteful number, since it uses less digits than its factorization.

21141386582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10570693293.

The product of its digits is 92160, while the sum is 41.

The spelling of 21141386582 in words is "twenty-one billion, one hundred forty-one million, three hundred eighty-six thousand, five hundred eighty-two".