21963299619 has 8 divisors (see below), whose sum is σ = 29293094992. Its totient is φ = 14637852000.

The previous prime is 21963299539. The next prime is 21963299621. The reversal of 21963299619 is 91699236912.

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

It is a de Polignac number, because none of the positive numbers 2^k-21963299619 is a prime.

It is a super-2 number, since 2×21963299619² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21963299639) 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, 1075132 + ... + 1095369.

It is an arithmetic number, because the mean of its divisors is an integer number (3661636874).

Almost surely, 2^21963299619 is an apocalyptic number.

21963299619 is a deficient number, since it is larger than the sum of its proper divisors (7329795373).

21963299619 is a wasteful number, since it uses less digits than its factorization.

21963299619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2173877.

The product of its digits is 2834352, while the sum is 57.

The spelling of 21963299619 in words is "twenty-one billion, nine hundred sixty-three million, two hundred ninety-nine thousand, six hundred nineteen".