16268262021 has 40 divisors (see below), whose sum is σ = 26884744128. Its totient is φ = 9720648000.

The previous prime is 16268262007. The next prime is 16268262041. The reversal of 16268262021 is 12026286261.

It is a happy number.

16268262021 is a `hidden beast` number, since 1 + 6 + 2 + 6 + 8 + 2 + 620 + 21 = 666.

It is not a de Polignac number, because 16268262021 - 2²⁵ = 16234707589 is a prime.

It is a super-2 number, since 2×16268262021² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16268262041) 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 39 ways as a sum of consecutive naturals, for example, 65320 + ... + 191841.

Almost surely, 2^16268262021 is an apocalyptic number.

16268262021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16268262021 is a deficient number, since it is larger than the sum of its proper divisors (10616482107).

16268262021 is a wasteful number, since it uses less digits than its factorization.

16268262021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257255 (or 257246 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 16268262021 in words is "sixteen billion, two hundred sixty-eight million, two hundred sixty-two thousand, twenty-one".