402643532446046 has 16 divisors (see below), whose sum is σ = 605278753390080. Its totient is φ = 200883952795680.

The previous prime is 402643532446033. The next prime is 402643532446069. The reversal of 402643532446046 is 640644235346204.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181229660 + ... + 183437936.

It is an arithmetic number, because the mean of its divisors is an integer number (37829922086880).

Almost surely, 2^{402643532446046} is an apocalyptic number.

402643532446046 is a deficient number, since it is larger than the sum of its proper divisors (202635220944034).

402643532446046 is a wasteful number, since it uses less digits than its factorization.

402643532446046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2406499.

The product of its (nonzero) digits is 39813120, while the sum is 53.

The spelling of 402643532446046 in words is "four hundred two trillion, six hundred forty-three billion, five hundred thirty-two million, four hundred forty-six thousand, forty-six".