21294119788 has 12 divisors (see below), whose sum is σ = 37282211512. Its totient is φ = 10642059360.

The previous prime is 21294119753. The next prime is 21294119809. The reversal of 21294119788 is 88791149212.

It is a super-3 number, since 3×21294119788³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1240545 + ... + 1257592.

Almost surely, 2^21294119788 is an apocalyptic number.

It is an amenable number.

21294119788 is a deficient number, since it is larger than the sum of its proper divisors (15988091724).

21294119788 is a wasteful number, since it uses less digits than its factorization.

21294119788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2500272 (or 2500270 counting only the distinct ones).

The product of its digits is 580608, while the sum is 52.

The spelling of 21294119788 in words is "twenty-one billion, two hundred ninety-four million, one hundred nineteen thousand, seven hundred eighty-eight".