21896032449 has 8 divisors (see below), whose sum is σ = 29242029600. Its totient is φ = 14573695136.

The previous prime is 21896032409. The next prime is 21896032469. The reversal of 21896032449 is 94423069812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21896032449 - 2⁷ = 21896032321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21896032398 and 21896032407.

It is not an unprimeable number, because it can be changed into a prime (21896032409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5912799 + ... + 5916500.

It is an arithmetic number, because the mean of its divisors is an integer number (3655253700).

Almost surely, 2^21896032449 is an apocalyptic number.

It is an amenable number.

21896032449 is a deficient number, since it is larger than the sum of its proper divisors (7345997151).

21896032449 is a wasteful number, since it uses less digits than its factorization.

21896032449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11829919.

The product of its (nonzero) digits is 746496, while the sum is 48.

The spelling of 21896032449 in words is "twenty-one billion, eight hundred ninety-six million, thirty-two thousand, four hundred forty-nine".