21499444962 has 24 divisors (see below), whose sum is σ = 46598423040. Its totient is φ = 7163975160.

The previous prime is 21499444951. The next prime is 21499444963. The reversal of 21499444962 is 26944499412.

21499444962 is a `hidden beast` number, since 2 + 149 + 9 + 4 + 4 + 496 + 2 = 666.

It is a super-2 number, since 2×21499444962² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21499444899 and 21499444908.

It is not an unprimeable number, because it can be changed into a prime (21499444963) 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 11 ways as a sum of consecutive naturals, for example, 155614 + ... + 259257.

It is an arithmetic number, because the mean of its divisors is an integer number (1941600960).

Almost surely, 2^21499444962 is an apocalyptic number.

21499444962 is an abundant number, since it is smaller than the sum of its proper divisors (25098978078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21499444962 is a wasteful number, since it uses less digits than its factorization.

21499444962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417758 (or 417755 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 54.

The spelling of 21499444962 in words is "twenty-one billion, four hundred ninety-nine million, four hundred forty-four thousand, nine hundred sixty-two".