13407406668 has 18 divisors (see below), whose sum is σ = 33890944724. Its totient is φ = 4469135544.

The previous prime is 13407406651. The next prime is 13407406681. The reversal of 13407406668 is 86660470431.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×13407406668² (a number of 21 digits) contains 22 as substring.

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, 186213946 + ... + 186214017.

Almost surely, 2^13407406668 is an apocalyptic number.

13407406668 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13407406668 is an abundant number, since it is smaller than the sum of its proper divisors (20483538056).

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

13407406668 is a wasteful number, since it uses less digits than its factorization.

13407406668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372427973 (or 372427968 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The spelling of 13407406668 in words is "thirteen billion, four hundred seven million, four hundred six thousand, six hundred sixty-eight".