405640463066 has 8 divisors (see below), whose sum is σ = 609351561504. Its totient is φ = 202523275900.

The previous prime is 405640462999. The next prime is 405640463117. The reversal of 405640463066 is 660364046504.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148476110 + ... + 148478841.

It is an arithmetic number, because the mean of its divisors is an integer number (76168945188).

Almost surely, 2^405640463066 is an apocalyptic number.

405640463066 is a deficient number, since it is larger than the sum of its proper divisors (203711098438).

405640463066 is a wasteful number, since it uses less digits than its factorization.

405640463066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296955636.

The product of its (nonzero) digits is 1244160, while the sum is 44.

The spelling of 405640463066 in words is "four hundred five billion, six hundred forty million, four hundred sixty-three thousand, sixty-six".