406367653646 has 8 divisors (see below), whose sum is σ = 626025844920. Its totient is φ = 197692372008.

The previous prime is 406367653621. The next prime is 406367653649. The reversal of 406367653646 is 646356763604.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 406367653591 and 406367653600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406367653649) 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, 2745727316 + ... + 2745727463.

It is an arithmetic number, because the mean of its divisors is an integer number (78253230615).

Almost surely, 2^406367653646 is an apocalyptic number.

406367653646 is a deficient number, since it is larger than the sum of its proper divisors (219658191274).

406367653646 is a wasteful number, since it uses less digits than its factorization.

406367653646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5491454818.

The product of its (nonzero) digits is 39191040, while the sum is 56.

The spelling of 406367653646 in words is "four hundred six billion, three hundred sixty-seven million, six hundred fifty-three thousand, six hundred forty-six".