21049095786479 has 8 divisors (see below), whose sum is σ = 23256289974240. Its totient is φ = 18949569607936.

The previous prime is 21049095786401. The next prime is 21049095786493. The reversal of 21049095786479 is 97468759094012.

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 21049095786479 - 2⁸ = 21049095786223 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 (21049095786779) 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, 26917001894 + ... + 26917002675.

It is an arithmetic number, because the mean of its divisors is an integer number (2907036246780).

Almost surely, 2^{21049095786479} is an apocalyptic number.

21049095786479 is a deficient number, since it is larger than the sum of its proper divisors (2207194187761).

21049095786479 is a wasteful number, since it uses less digits than its factorization.

21049095786479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53834004609.

The product of its (nonzero) digits is 274337280, while the sum is 71.

The spelling of 21049095786479 in words is "twenty-one trillion, forty-nine billion, ninety-five million, seven hundred eighty-six thousand, four hundred seventy-nine".