21436516710 has 48 divisors (see below), whose sum is σ = 63697080096. Its totient is φ = 4899775104.

The previous prime is 21436516697. The next prime is 21436516753. The reversal of 21436516710 is 1761563412.

21436516710 is a `hidden beast` number, since 214 + 365 + 16 + 71 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17012479 + ... + 17013738.

It is an arithmetic number, because the mean of its divisors is an integer number (1327022502).

Almost surely, 2^21436516710 is an apocalyptic number.

21436516710 is an abundant number, since it is smaller than the sum of its proper divisors (42260563386).

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

21436516710 is a wasteful number, since it uses less digits than its factorization.

21436516710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34026237 (or 34026234 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The spelling of 21436516710 in words is "twenty-one billion, four hundred thirty-six million, five hundred sixteen thousand, seven hundred ten".