21167413016 has 16 divisors (see below), whose sum is σ = 39910627800. Its totient is φ = 10524578944.

The previous prime is 21167412977. The next prime is 21167413019. The reversal of 21167413016 is 61031476112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21167413019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7389425 + ... + 7392288.

Almost surely, 2^21167413016 is an apocalyptic number.

It is an amenable number.

21167413016 is a deficient number, since it is larger than the sum of its proper divisors (18743214784).

21167413016 is a wasteful number, since it uses less digits than its factorization.

21167413016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14781898 (or 14781894 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

Adding to 21167413016 its reverse (61031476112), we get a palindrome (82198889128).

The spelling of 21167413016 in words is "twenty-one billion, one hundred sixty-seven million, four hundred thirteen thousand, sixteen".