21713706486 has 24 divisors (see below), whose sum is σ = 47049695784. Its totient is φ = 7237389600.

The previous prime is 21713706419. The next prime is 21713706551. The reversal of 21713706486 is 68460731712.

21713706486 is a `hidden beast` number, since 217 + 1 + 370 + 64 + 8 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 287530 + ... + 355106.

It is an arithmetic number, because the mean of its divisors is an integer number (1960403991).

Almost surely, 2^21713706486 is an apocalyptic number.

21713706486 is an abundant number, since it is smaller than the sum of its proper divisors (25335989298).

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

21713706486 is a wasteful number, since it uses less digits than its factorization.

21713706486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85436 (or 85433 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The spelling of 21713706486 in words is "twenty-one billion, seven hundred thirteen million, seven hundred six thousand, four hundred eighty-six".