21069652949379 has 12 divisors (see below), whose sum is σ = 30446943582432. Its totient is φ = 14040435099600.

The previous prime is 21069652949377. The next prime is 21069652949393. The reversal of 21069652949379 is 97394925696012.

21069652949379 is a `hidden beast` number, since 2 + 1 + 0 + 6 + 9 + 6 + 529 + 4 + 93 + 7 + 9 = 666.

It is not a de Polignac number, because 21069652949379 - 2¹ = 21069652949377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21069652949377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 499994427 + ... + 500036564.

It is an arithmetic number, because the mean of its divisors is an integer number (2537245298536).

Almost surely, 2^{21069652949379} is an apocalyptic number.

21069652949379 is a deficient number, since it is larger than the sum of its proper divisors (9377290633053).

21069652949379 is a wasteful number, since it uses less digits than its factorization.

21069652949379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000033338 (or 1000033335 counting only the distinct ones).

The product of its (nonzero) digits is 396809280, while the sum is 72.

The spelling of 21069652949379 in words is "twenty-one trillion, sixty-nine billion, six hundred fifty-two million, nine hundred forty-nine thousand, three hundred seventy-nine".