21469395786 has 16 divisors (see below), whose sum is σ = 42940896768. Its totient is φ = 7156114400.

The previous prime is 21469395763. The next prime is 21469395791. The reversal of 21469395786 is 68759396412.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 65431 + ... + 217301.

It is an arithmetic number, because the mean of its divisors is an integer number (2683806048).

Almost surely, 2^21469395786 is an apocalyptic number.

21469395786 is an abundant number, since it is smaller than the sum of its proper divisors (21471500982).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21469395786 is a wasteful number, since it uses less digits than its factorization.

21469395786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175437.

The product of its digits is 19595520, while the sum is 60.

The spelling of 21469395786 in words is "twenty-one billion, four hundred sixty-nine million, three hundred ninety-five thousand, seven hundred eighty-six".