21636429104 has 10 divisors (see below), whose sum is σ = 41920581420. Its totient is φ = 10818214544.

The previous prime is 21636429029. The next prime is 21636429119. The reversal of 21636429104 is 40192463612.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 676138394 + ... + 676138425.

It is an arithmetic number, because the mean of its divisors is an integer number (4192058142).

Almost surely, 2^21636429104 is an apocalyptic number.

It is an amenable number.

21636429104 is a deficient number, since it is larger than the sum of its proper divisors (20284152316).

21636429104 is a wasteful number, since it uses less digits than its factorization.

21636429104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352276827 (or 1352276821 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The spelling of 21636429104 in words is "twenty-one billion, six hundred thirty-six million, four hundred twenty-nine thousand, one hundred four".