21082634582 has 4 divisors (see below), whose sum is σ = 31623951876. Its totient is φ = 10541317290.

The previous prime is 21082634579. The next prime is 21082634591. The reversal of 21082634582 is 28543628012.

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, 5270658644 + ... + 5270658647.

It is an arithmetic number, because the mean of its divisors is an integer number (7905987969).

Almost surely, 2^21082634582 is an apocalyptic number.

21082634582 is a deficient number, since it is larger than the sum of its proper divisors (10541317294).

21082634582 is a wasteful number, since it uses less digits than its factorization.

21082634582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10541317293.

The product of its (nonzero) digits is 184320, while the sum is 41.

The spelling of 21082634582 in words is "twenty-one billion, eighty-two million, six hundred thirty-four thousand, five hundred eighty-two".