21677112110605 has 8 divisors (see below), whose sum is σ = 29728610894592. Its totient is φ = 14864305447248.

The previous prime is 21677112110603. The next prime is 21677112110609. The reversal of 21677112110605 is 50601121177612.

It is a happy number.

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 21677112110605 - 2¹ = 21677112110603 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21677112110603) 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, 309673030117 + ... + 309673030186.

It is an arithmetic number, because the mean of its divisors is an integer number (3716076361824).

Almost surely, 2^{21677112110605} is an apocalyptic number.

It is an amenable number.

21677112110605 is a deficient number, since it is larger than the sum of its proper divisors (8051498783987).

21677112110605 is an equidigital number, since it uses as much as digits as its factorization.

21677112110605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619346060315.

The product of its (nonzero) digits is 35280, while the sum is 40.

The spelling of 21677112110605 in words is "twenty-one trillion, six hundred seventy-seven billion, one hundred twelve million, one hundred ten thousand, six hundred five".