21580098910 has 16 divisors (see below), whose sum is σ = 40533055776. Its totient is φ = 8256733408.

The previous prime is 21580098871. The next prime is 21580098937. The reversal of 21580098910 is 1989008512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46913029 + ... + 46913488.

It is an arithmetic number, because the mean of its divisors is an integer number (2533315986).

Almost surely, 2^21580098910 is an apocalyptic number.

21580098910 is a deficient number, since it is larger than the sum of its proper divisors (18952956866).

21580098910 is a wasteful number, since it uses less digits than its factorization.

21580098910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93826547.

The product of its (nonzero) digits is 51840, while the sum is 43.

The spelling of 21580098910 in words is "twenty-one billion, five hundred eighty million, ninety-eight thousand, nine hundred ten".