21467616938 has 8 divisors (see below), whose sum is σ = 32502373632. Its totient is φ = 10633492396.

The previous prime is 21467616889. The next prime is 21467616953. The reversal of 21467616938 is 83961676412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21467616938.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50157770 + ... + 50158197.

It is an arithmetic number, because the mean of its divisors is an integer number (4062796704).

Almost surely, 2^21467616938 is an apocalyptic number.

21467616938 is a deficient number, since it is larger than the sum of its proper divisors (11034756694).

21467616938 is a wasteful number, since it uses less digits than its factorization.

21467616938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100316076.

The product of its digits is 2612736, while the sum is 53.

The spelling of 21467616938 in words is "twenty-one billion, four hundred sixty-seven million, six hundred sixteen thousand, nine hundred thirty-eight".