16268663949 has 16 divisors (see below), whose sum is σ = 23207532480. Its totient is φ = 10106501760.

The previous prime is 16268663923. The next prime is 16268663951. The reversal of 16268663949 is 94936686261.

It is not a de Polignac number, because 16268663949 - 2¹¹ = 16268661901 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16268663892 and 16268663901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16268663959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2335992 + ... + 2342945.

It is an arithmetic number, because the mean of its divisors is an integer number (1450470780).

Almost surely, 2^16268663949 is an apocalyptic number.

16268663949 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

16268663949 is a deficient number, since it is larger than the sum of its proper divisors (6938868531).

16268663949 is a wasteful number, since it uses less digits than its factorization.

16268663949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4679020.

The product of its digits is 20155392, while the sum is 60.

The spelling of 16268663949 in words is "sixteen billion, two hundred sixty-eight million, six hundred sixty-three thousand, nine hundred forty-nine".