406666733400 has 72 divisors (see below), whose sum is σ = 1365722452380. Its totient is φ = 108444461760.

The previous prime is 406666733359. The next prime is 406666733437. The reversal of 406666733400 is 4337666604.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 112961182 + ... + 112964781.

Almost surely, 2^406666733400 is an apocalyptic number.

406666733400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

406666733400 is an abundant number, since it is smaller than the sum of its proper divisors (959055718980).

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

406666733400 is a wasteful number, since it uses less digits than its factorization.

406666733400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225925985 (or 225925973 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 45.

The spelling of 406666733400 in words is "four hundred six billion, six hundred sixty-six million, seven hundred thirty-three thousand, four hundred".