400682845505 has 8 divisors (see below), whose sum is σ = 497399394600. Its totient is φ = 309492956416.

The previous prime is 400682845481. The next prime is 400682845559. The reversal of 400682845505 is 505548286004.

It can be written as a sum of positive squares in 4 ways, for example, as 107144274241 + 293538571264 = 327329^2 + 541792^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 400682845505 - 2¹⁴ = 400682829121 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 400682845505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1381664840 + ... + 1381665129.

It is an arithmetic number, because the mean of its divisors is an integer number (62174924325).

Almost surely, 2^400682845505 is an apocalyptic number.

It is an amenable number.

400682845505 is a deficient number, since it is larger than the sum of its proper divisors (96716549095).

400682845505 is a wasteful number, since it uses less digits than its factorization.

400682845505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2763330003.

The product of its (nonzero) digits is 1536000, while the sum is 47.

The spelling of 400682845505 in words is "four hundred billion, six hundred eighty-two million, eight hundred forty-five thousand, five hundred five".