16266281800 has 24 divisors (see below), whose sum is σ = 37819105650. Its totient is φ = 6506512640.

The previous prime is 16266281797. The next prime is 16266281833. The reversal of 16266281800 is 818266261.

It can be written as a sum of positive squares in 3 ways, for example, as 6671295684 + 9594986116 = 81678^2 + 97954^2 .

It is a super-2 number, since 2×16266281800² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40665505 + ... + 40665904.

Almost surely, 2^16266281800 is an apocalyptic number.

16266281800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16266281800 is an abundant number, since it is smaller than the sum of its proper divisors (21552823850).

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

16266281800 is a wasteful number, since it uses less digits than its factorization.

16266281800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81331425 (or 81331416 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The spelling of 16266281800 in words is "sixteen billion, two hundred sixty-six million, two hundred eighty-one thousand, eight hundred".