21764136196 has 48 divisors (see below), whose sum is σ = 42427183680. Its totient is φ = 9685854720.

The previous prime is 21764136181. The next prime is 21764136203. The reversal of 21764136196 is 69163146712.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 415315 + ... + 464773.

It is an arithmetic number, because the mean of its divisors is an integer number (883899660).

Almost surely, 2^21764136196 is an apocalyptic number.

It is an amenable number.

21764136196 is a deficient number, since it is larger than the sum of its proper divisors (20663047484).

21764136196 is a wasteful number, since it uses less digits than its factorization.

21764136196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49684 (or 49682 counting only the distinct ones).

The product of its digits is 326592, while the sum is 46.

The spelling of 21764136196 in words is "twenty-one billion, seven hundred sixty-four million, one hundred thirty-six thousand, one hundred ninety-six".