21967085013 has 16 divisors (see below), whose sum is σ = 29389080000. Its totient is φ = 14594952960.

The previous prime is 21967085009. The next prime is 21967085027. The reversal of 21967085013 is 31058076912.

It is not a de Polignac number, because 21967085013 - 2² = 21967085009 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21967085003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2478013 + ... + 2486861.

It is an arithmetic number, because the mean of its divisors is an integer number (1836817500).

Almost surely, 2^21967085013 is an apocalyptic number.

It is an amenable number.

21967085013 is a deficient number, since it is larger than the sum of its proper divisors (7421994987).

21967085013 is a wasteful number, since it uses less digits than its factorization.

21967085013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11572.

The product of its (nonzero) digits is 90720, while the sum is 42.

The spelling of 21967085013 in words is "twenty-one billion, nine hundred sixty-seven million, eighty-five thousand, thirteen".