16268888406618 has 12 divisors (see below), whose sum is σ = 35249258214378. Its totient is φ = 5422962802200.

The previous prime is 16268888406599. The next prime is 16268888406653. The reversal of 16268888406618 is 81660488886261.

16268888406618 is a `hidden beast` number, since 1 + 6 + 2 + 6 + 88 + 88 + 406 + 61 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 14939979761529 + 1328908645089 = 3865227^2 + 1152783^2 .

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, 451913566833 + ... + 451913566868.

Almost surely, 2^{16268888406618} is an apocalyptic number.

16268888406618 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

16268888406618 is an abundant number, since it is smaller than the sum of its proper divisors (18980369807760).

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

16268888406618 is a wasteful number, since it uses less digits than its factorization.

16268888406618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903827133709 (or 903827133706 counting only the distinct ones).

The product of its (nonzero) digits is 339738624, while the sum is 72.

The spelling of 16268888406618 in words is "sixteen trillion, two hundred sixty-eight billion, eight hundred eighty-eight million, four hundred six thousand, six hundred eighteen".