21962059499 has 8 divisors (see below), whose sum is σ = 22005126000. Its totient is φ = 21919034592.

The previous prime is 21962059489. The next prime is 21962059507. The reversal of 21962059499 is 99495026912.

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 21962059499 - 2³² = 17667092203 is a prime.

It is a super-2 number, since 2×21962059499² (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 (21962059409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1175372 + ... + 1193910.

It is an arithmetic number, because the mean of its divisors is an integer number (2750640750).

Almost surely, 2^21962059499 is an apocalyptic number.

21962059499 is a deficient number, since it is larger than the sum of its proper divisors (43066501).

21962059499 is a wasteful number, since it uses less digits than its factorization.

21962059499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20797.

The product of its (nonzero) digits is 3149280, while the sum is 56.

The spelling of 21962059499 in words is "twenty-one billion, nine hundred sixty-two million, fifty-nine thousand, four hundred ninety-nine".