16311866240 has 32 divisors (see below), whose sum is σ = 38995556760. Its totient is φ = 6524746240.

The previous prime is 16311866239. The next prime is 16311866243. The reversal of 16311866240 is 4266811361.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-3 number, since 3×16311866240³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16311866194 and 16311866203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16311866243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12743006 + ... + 12744285.

Almost surely, 2^16311866240 is an apocalyptic number.

16311866240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16311866240 is an abundant number, since it is smaller than the sum of its proper divisors (22683690520).

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

16311866240 is an equidigital number, since it uses as much as digits as its factorization.

16311866240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25487310 (or 25487298 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The spelling of 16311866240 in words is "sixteen billion, three hundred eleven million, eight hundred sixty-six thousand, two hundred forty".