21759077466107 has 4 divisors (see below), whose sum is σ = 21762494949696. Its totient is φ = 21755659982520.

The previous prime is 21759077466047. The next prime is 21759077466197. The reversal of 21759077466107 is 70166477095712.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21759077466107 - 2³⁶ = 21690357989371 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21759077466107.

It is not an unprimeable number, because it can be changed into a prime (21759077466197) 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, 1708732244 + ... + 1708744977.

It is an arithmetic number, because the mean of its divisors is an integer number (5440623737424).

Almost surely, 2^{21759077466107} is an apocalyptic number.

21759077466107 is a deficient number, since it is larger than the sum of its proper divisors (3417483589).

21759077466107 is an equidigital number, since it uses as much as digits as its factorization.

21759077466107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3417483588.

The product of its (nonzero) digits is 31116960, while the sum is 62.

The spelling of 21759077466107 in words is "twenty-one trillion, seven hundred fifty-nine billion, seventy-seven million, four hundred sixty-six thousand, one hundred seven".