21695104670 has 8 divisors (see below), whose sum is σ = 39051188424. Its totient is φ = 8678041864.

The previous prime is 21695104667. The next prime is 21695104679. The reversal of 21695104670 is 7640159612.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21695104679) 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, 1084755224 + ... + 1084755243.

It is an arithmetic number, because the mean of its divisors is an integer number (4881398553).

Almost surely, 2^21695104670 is an apocalyptic number.

21695104670 is a deficient number, since it is larger than the sum of its proper divisors (17356083754).

21695104670 is a wasteful number, since it uses less digits than its factorization.

21695104670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2169510474.

The product of its (nonzero) digits is 90720, while the sum is 41.

The spelling of 21695104670 in words is "twenty-one billion, six hundred ninety-five million, one hundred four thousand, six hundred seventy".