21675911146 has 8 divisors (see below), whose sum is σ = 32587262784. Its totient is φ = 10813490220.

The previous prime is 21675911143. The next prime is 21675911161. The reversal of 21675911146 is 64111957612.

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

It is not an unprimeable number, because it can be changed into a prime (21675911141) 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, 12231570 + ... + 12233341.

It is an arithmetic number, because the mean of its divisors is an integer number (4073407848).

Almost surely, 2^21675911146 is an apocalyptic number.

21675911146 is a deficient number, since it is larger than the sum of its proper divisors (10911351638).

21675911146 is a wasteful number, since it uses less digits than its factorization.

21675911146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24465356.

The product of its digits is 90720, while the sum is 43.

The spelling of 21675911146 in words is "twenty-one billion, six hundred seventy-five million, nine hundred eleven thousand, one hundred forty-six".