21777676105 has 8 divisors (see below), whose sum is σ = 26279208000. Its totient is φ = 17324809776.

The previous prime is 21777676103. The next prime is 21777676157. The reversal of 21777676105 is 50167677712.

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

It is a cyclic number.

It is not a de Polignac number, because 21777676105 - 2¹ = 21777676103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21777676103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12165405 + ... + 12167194.

It is an arithmetic number, because the mean of its divisors is an integer number (3284901000).

Almost surely, 2^21777676105 is an apocalyptic number.

It is an amenable number.

21777676105 is a deficient number, since it is larger than the sum of its proper divisors (4501531895).

21777676105 is a wasteful number, since it uses less digits than its factorization.

21777676105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24332783.

The product of its (nonzero) digits is 864360, while the sum is 49.

The spelling of 21777676105 in words is "twenty-one billion, seven hundred seventy-seven million, six hundred seventy-six thousand, one hundred five".